{"Name":"Severe myoclonic epilepsy in infancy","DiseaseID__c":"GARD:0010430","id":10430,"encodedName":"severe-myoclonic-epilepsy-in-infancy","IsDeleted":false,"Disease_Name_Full__c":"Severe myoclonic epilepsy in infancy","Xref_IDs__c":"230437002; 423022943; C0751122; C116573; DOID:0080422; G40.83; MEDGEN:148243; MONDO:0100135; ORPHA:33069","USA_Estimate__c":"50,000","No_of_Specialist_Tagsa__c":3,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":2,"World_Estimate__c":"80,000 to 800,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":2,"No_of_Disease_Descriptions__c":3,"Disease_Characteristics_Score__c":7,"No_of_Age_at_Onset__c":2,"Description_Source__c":"MONDO:0100135","Disease_Description__c":"Dravet syndrome is a channelopathy with epilepsy of with onset during the first year of life, typically 4-5 months, characterized by status epilepticus and a variety of drug-resistant seizures often induced by fever, presenting in previously healthy children, and which frequently leads to cognitive and motor impairment. Dravet differs from other channelopathies usually due to a mutation in SCN1A.","GARD_Name__c":"Severe myoclonic epilepsy in infancy","GARD_Synonym__c":"dravet; dravet syndrome; drvt; ds; ds - dravet syndrome; epileptic encephalopathy, early infantile, 6 (dravet syndrome); myoclonic epilepsy, severe, of infancy; severe myoclonic epilepsy of infancy; severe myoclonus epilepsy of infancy; sme; smeb; smei","Curated_Disease_Description_Source__c":"GARD:0010430","Curated_Disease_Description__c":"Dravet syndrome is the most severe of a group of conditions known as SCN1A-related seizure disorders. Symptoms include seizures which first occur in infancy that are often triggered by high temperatures (febrile seizures). In childhood, many types of seizures may occur and they may increase in frequency. Seizures may be difficult to treat. Other symptoms include loss of motor skills, intellectual disability, speech impairment, and difficulty with movement. Most cases of Dravet syndrome occur when the SCN1A gene is not working correctly. It can be inherited in an autosomal dominant pattern, but most people with Dravet syndrome do not have a family history of the condition. Diagnosis is based on a clinical exam, medical history, and the results of genetic testing.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"50,000","Age_at_Onset_Snippet_Text__c":"as a Newborn and as an Infant","SourceID__c":"ORPHA:33069","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0100135","ORPHANET_ID__c":null,"Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Síndrome de dravet","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"síndrome de dravet","Spanish_GARD_Synonym__c":"epilepsia grave de la infancia con mioclono; epilepsia mioclónica grave de la infancia","Category_Linearization__c":null,"icd10_id__c":null,"mesh_id__c":null,"omim_id__c":null,"snomed_id__c":null,"umls_id__c":null,"GARD_Disease__c":[{"Curated_Disease_Description__c":"Dravet syndrome is the most severe of a group of conditions known as SCN1A-related seizure disorders. Symptoms include seizures which first occur in infancy that are often triggered by high temperatures (febrile seizures). In childhood, many types of seizures may occur and they may increase in frequency. Seizures may be difficult to treat. Other symptoms include loss of motor skills, intellectual disability, speech impairment, and difficulty with movement. Most cases of Dravet syndrome occur when the SCN1A gene is not working correctly. It can be inherited in an autosomal dominant pattern, but most people with Dravet syndrome do not have a family history of the condition. Diagnosis is based on a clinical exam, medical history, and the results of genetic testing.","Curated_Disease_Description_Source__c":"GARD:0010430","GARD_Synonym__c":"dravet; dravet syndrome; drvt; ds; ds - dravet syndrome; epileptic encephalopathy, early infantile, 6 (dravet syndrome); myoclonic epilepsy, severe, of infancy; severe myoclonic epilepsy of infancy; severe myoclonus epilepsy of infancy; sme; smeb; smei","Name":"Severe myoclonic epilepsy in infancy","Curated_USA_Estimate__c":"50,000","estimateUsa":"50,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"FamilieSCN2A","Website__c":"https://scn2a.org/"},{"Account_Name__c":"Simons Searchlight","Website__c":"https://www.simonssearchlight.org/"},{"Account_Name__c":"CURE Epilepsy","Website__c":"https://www.cureepilepsy.org/"},{"Account_Name__c":"Alianza Iberoamericana de Enfermedades Raras o Poco Frecuentes","Website__c":"https://aliber.org/web/"},{"Account_Name__c":"Federación Mexicana de Enfermedades Raras (FEMEXER)","Website__c":"http://www.femexer.org/"},{"Account_Name__c":"Federación Española de Enfermedades Raras","Website__c":"https://enfermedades-raras.org/"},{"Account_Name__c":"Federación Colombiana de Enfermedades Raras","Website__c":"http://www.fecoer.org"},{"Account_Name__c":"Federación Argentina de Enfermedades Poco Frecuentes","Website__c":"https://fadepof.org.ar/"},{"Account_Name__c":"Asociación Todos Unidos Enfermedades Raras Uruguay","Website__c":"https://atueru.org.uy/"},{"Account_Name__c":"Epilepsy Foundation","Website__c":"https://www.epilepsy.com/"},{"Account_Name__c":"Dravet Syndrome Foundation, Inc","Website__c":"https://www.dravetfoundation.org/"}],"GARD_Disease_Tag__c":[{"Tag_Name__c":"Epilepsy","Tag_Category__c":"Account;Specialist","curated_tag_name":"Epilepsy"},{"Tag_Name__c":"Neurodevelopmental disabilities","Tag_Category__c":"Specialist","curated_tag_name":"Neurodevelopmental disabilities"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:33069"},{"Age_At_Onset__c":"Neonatal","Provided_By__c":"ORPHA:33069"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C0751122"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0010430","Source__c":"RareSource"},{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK1318","Source__c":"Gene Review","Xref__c":"NBK1318"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0080422","Source__c":"MONDO:0100135","Xref__c":"DOID:0080422"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C116573","Source__c":"C0751122; MONDO:0100135","Xref__c":"C116573"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C0751122","Source__c":"C0751122","Xref__c":"C0751122"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=230437002","Source__c":"C0751122; MONDO:0100135","Xref__c":"230437002"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=148243","Source__c":"C0751122","Xref__c":"MEDGEN:148243"},{"URL__c":"http://purl.bioontology.org/ontology/ICD10CM/G40.83","Source__c":"MONDO:0100135","Xref__c":"G40.83"},{"URL__c":"https://www.orpha.net/en/disease/detail/33069","Source__c":"C0751122; ORPHA:33069","Xref__c":"ORPHA:33069"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0100135","Source__c":"GARD:0010430","Xref__c":"MONDO:0100135"},{"URL__c":"https://secure.ssa.gov/apps10/poms.nsf/lnx/0423022943","Xref__c":"423022943"},{"URL__c":"https://www.ninds.nih.gov/health-information/disorders/dravet-syndrome"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C147071","Source__c":"C0751122","Xref__c":"C147071"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"SCN1A","GHR_URL__c":"https://medlineplus.gov/genetics/gene/scn1a","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal dominant"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Very brief, involuntary random muscular contractions occurring at rest, in response to sensory stimuli, or accompanying voluntary movements.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001336","HPO_Synonym__c":"Myoclonic jerks","HPO_Name__c":"Myoclonus","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Reduced attention span characterized by distractibility and impulsivity.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000736","HPO_Synonym__c":"Easily distracted; Easy distractibility; High distractibility; Poor attention span; Problem paying attention; Short attention span","HPO_Name__c":"Short attention span","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0200048","HPO_Name__c":"Cyanotic episode","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Bradykinesia literally means slow movement, and is used clinically to denote a slowness in the execution of movement (in contrast to hypokinesia, which is used to refer to slowness in the initiation of movement).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002067","HPO_Synonym__c":"Slow movements; Slowness of movements","HPO_Name__c":"Bradykinesia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality of the ability (skills) to perform a precise movement of small muscles with the intent to perform a specific act. Fine motor skills are required to mediate movements of the wrists, hands, fingers, feet, and toes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007010","HPO_Synonym__c":"Fine motor disability; Fine motor impairment; Fine motor skill dysfunction; Impaired fine motor skills","HPO_Name__c":"Poor fine motor coordination","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Reduced ability to extend (straighten) the knee joint.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003066","HPO_Synonym__c":"Limited knee straightening","HPO_Name__c":"Limited knee extension","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Generalized-onset tonic-clonic seizures that are provoked by flashing or flickering light.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007207","HPO_Synonym__c":"Photically induced tonic-clonic seizure; Photosensitive tonic-clonic seizures; Seizures, tonic-clonic, photosensitive","HPO_Name__c":"Photosensitive tonic-clonic seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A febrile seizure that has any of the following features: focal semiology (or associated with post-ictal neurologic abnormalities beyond drowsiness, such as a Todd's paresis), prolonged seizure beyond 15 minutes, or recurring (occurring more than once) in a 24 hour period.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011172","HPO_Synonym__c":"Complex febrile convulsion; Complex febrile seizures; Complex fever fit","HPO_Name__c":"Complex febrile seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Sudden, repetitive, nonrhythmic motor movements (spasms), involving the eyes and muscles of the face.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011468","HPO_Synonym__c":"Cramping of facial muscles; Facial spasms; Facial tics; Jerking of facial muscles; Mimic spasms; Spasms of facial muscles; Twitching of facial muscles","HPO_Name__c":"Facial tics","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A generalized myoclonic seizure is a type of generalized motor seizure characterized by bilateral, sudden, brief (<100 ms) involuntary single or multiple contraction of muscles or muscle groups of variable topography (axial, proximal limb, distal). Myoclonus is less regularly repetitive and less sustained than is clonus.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002123","HPO_Synonym__c":"Generalised epileptic myoclonus; Generalised myoclonic seizure; Generalized epileptic myoclonus; Generalized myoclonic seizures; Myoclonus seizures","HPO_Name__c":"Generalized myoclonic seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An outward deviation of the foot at the talocalcaneal or subtalar joint.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008081","HPO_Synonym__c":"Valgus foot deformity","HPO_Name__c":"Pes valgus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An atypical absence seizure is a type of generalized non-motor (absence) seizure characterized by interruption of ongoing activities and reduced responsiveness. In comparison to a typical absence seizure, changes in tone may be more pronounced, onset and/or cessation may be less abrupt, and the duration of the ictus and post-ictal recovery may be longer. Although not always available, an EEG often demonstrates slow (<3 Hz), irregular, generalized spike-wave activity.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007270","HPO_Synonym__c":"Atypical absence; Atypical absence seizures; Atypical petit mal seizures","HPO_Name__c":"Atypical absence seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A foot where the longitudinal arch of the foot is in contact with the ground or floor when the individual is standing; or, in a patient lying supine, a foot where the arch is in contact with the surface of a flat board pressed against the sole of the foot by the examiner with a pressure similar to that expected from weight bearing; or, the height of the arch is reduced.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001763","HPO_Synonym__c":"Flat feet; Flat foot","HPO_Name__c":"Pes planus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Uncommon (<1-4%)","Feature__r":{"HPO_Description__c":"A generalized tonic seizure is a type of generalized motor seizure characterized by bilateral limb stiffening or elevation, often with neck stiffening without a subsequent clonic phase. The tonic activity can be a sustained abnormal posture, either in extension or flexion, sometimes accompanied by tremor of the extremities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010818","HPO_Synonym__c":"Generalised hypertonic seizure; Generalized hypertonic seizure; Generalized tonic seizures","HPO_Name__c":"Generalized tonic seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Unlocalized atrophy of the brain with decreased total brain matter volume and increased ventricular size.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002283","HPO_Synonym__c":"Diffuse brain atrophy; Generalized brain atrophy; Generalized brain degeneration; Generalized cerebral atrophy","HPO_Name__c":"Global brain atrophy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormally pale skin.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000980","HPO_Name__c":"Pallor","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Loss of developmental skills, as manifested by loss of developmental milestones.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002376","HPO_Synonym__c":"Loss of acquired milestones; Loss of developmental milestones; Loss of milestones; Mental deterioration in childhood; Neurodevelopmental regression; Psychomotor regression; Psychomotor regression beginning in infancy; Psychomotor regression in infants; Psychomotor regression, progressive","HPO_Name__c":"Developmental regression","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The presence of one or more obsessive-compulsive personality traits. Obsessions refer to persistent intrusive thoughts, and compulsions to intrusive behaviors, which the affected person experiences as involuntary, senseless, or repugnant.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008770","HPO_Synonym__c":"Obsessive-compulsive trait; Obsessive-compulsive traits","HPO_Name__c":"Obsessive-compulsive trait","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality in cerebral electrical activity recorded along the scalp by electroencephalography (EEG) and being identified at multiple locations (foci).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010841","HPO_Synonym__c":"Multifocal EEG abnormality","HPO_Name__c":"Multifocal epileptiform discharges","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_EEG"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000466","HPO_Synonym__c":"Limited cervical range of motion; Limited neck range of motion","HPO_Name__c":"Limited neck range of motion","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"EEG discharges recorded in particular areas of a localized (focal) abnormality in cerebral electrical activity recorded along the scalp by electroencephalography (EEG).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011185","HPO_Synonym__c":"Focal EEG Abnormality","HPO_Name__c":"EEG with focal epileptiform discharges","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_EEG"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Habitual flow of saliva out of the mouth.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002307","HPO_Synonym__c":"Dribbling; Drooling; Sialorrhea","HPO_Name__c":"Drooling","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Epilepsia partialis continua (also called Kojevnikov's or Kozhevnikov's epilepsia) is a type of focal motor status epilepticus characterized by repeated stereotyped simple motor manifestations such as jerks, typically of a limb or the face, recurring every few seconds or minutes for extended periods (days or years).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012847","HPO_Synonym__c":"Epilepsia partialis continua of Kojevnikov; Kojevnikov's epilepsia; Kozhevnikov's epilepsia","HPO_Name__c":"Epilepsia partialis continua","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Generalized clonic seizure is a type of generalized motor seizure characterized by sustained bilateral jerking, either symmetric or asymmetric, that is regularly repetitive and involves the same muscle groups.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011169","HPO_Synonym__c":"Generalised clonic seizure; Generalised onset clonic seizure; Generalised-onset clonic seizure; Generalized clonic seizures; Generalized onset clonic seizure; Generalized-onset clonic seizure","HPO_Name__c":"Generalized clonic seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A febrile seizure is any type of seizure (most often a generalized tonic-clonic seizure) occurring with fever (at least 38 degrees Celsius) but in the absence of central nervous system infection, severe metabolic disturbance or other alternative precipitant in children between the ages of 3 months and 6 years.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002373","HPO_Synonym__c":"Febrile convulsion; Febrile seizures; Fever induced seizures; Seizures, febrile, in early childhood; Seizures, generalized, associated with fever","HPO_Name__c":"Febrile seizure (within the age range of 3 months to 6 years)","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Generalised myoclonic seizure provoked by flashing or flickering light.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001327","HPO_Synonym__c":"Photically induced myoclonic seizure; Photomyoclonic seizure; Photomyoclonic seizures","HPO_Name__c":"Photosensitive myoclonic seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A deficit in coordination of muscle movements. Coordination is defined as the orchestrated movement of multiple body parts as required to accomplish intended actions, like walking.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002311","HPO_Synonym__c":"Difficulties in coordination; Incoordination; Incoordination of limb movements; Limb incoordination; Poor coordination; Poor motor coordination","HPO_Name__c":"Incoordination","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Acting on the spur of the moment or on a momentary basis without consideration of outcomes; having difficulty establishing or following plans; experiencing a sense of urgency and engaging in behavior that is uninhibited, cannot be inhibited, and is uncontrolled. The possibility of repression is inconceivable.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100710","HPO_Synonym__c":"Impulsive; Impulsivity","HPO_Name__c":"Impulsivity","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"There is inconclusive evidence to precisely define the duration of the seizure; however, based on current evidence an operational threshold of 10 minutes is appropriate as beyond this a seizure is likely to be more prolonged. The individual may or may not be aware or in coma.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0031475","HPO_Synonym__c":"Nonconvulsive status epilepticus","HPO_Name__c":"Status epilepticus without prominent motor symptoms","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormal cognition is characterized by deficits in thinking, reasoning, or remembering.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100543","HPO_Synonym__c":"Abnormality of cognition; Cognitive abnormality; Cognitive defects; Cognitive deficits; Cognitive impairment; Intellectual impairment","HPO_Name__c":"Cognitive impairment","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"EEG discharges recorded on the entire scalp typically seen in persons with epilepsy.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011198","HPO_Name__c":"EEG with generalized epileptiform discharges","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_EEG"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A type of rigidity in which a muscle responds with cogwheellike jerks to the use of constant force in bending the limb (i.e., it gives way in little, repeated jerks when the muscle is passively stretched).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002396","HPO_Name__c":"Cogwheel rigidity","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Intense feelings of nervousness, tension, or panic often arise in response to interpersonal stresses. There is worry about the negative effects of past unpleasant experiences and future negative possibilities. Individuals may feel fearful, apprehensive, or threatened by uncertainty, and they may also have fears of falling apart or losing control.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000739","HPO_Synonym__c":"Anxiety; Anxiousness; Excessive, persistent worry and fear","HPO_Name__c":"Anxiety","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A type of focal-onset seizure in which awareness is preserved. Awareness during a seizure is defined as the patient being fully aware of themself and their environment throughout the seizure, even if immobile.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002349","HPO_Synonym__c":"Focal aware seizures; Focal seizure with retained awareness; Focal seizure without impairment of awareness; Focal seizure without impairment of consciousness or awareness; Focal seizures without impairment of consciousness or awareness; Partial seizure with retained awareness; Partial seizure without impairment of awareness; Simple partial seizure; Simple partial seizures","HPO_Name__c":"Focal aware seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Persistent deficits in social interaction and communication and interaction as well as a markedly restricted repertoire of activity and interest as well as repetitive patterns of behavior.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000729","HPO_Synonym__c":"ASD; Pervasive developmental disorder","HPO_Name__c":"Autistic behavior","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Twisted position of the tibia (shin bone) associated with pathological rotation of the leg.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100694","HPO_Name__c":"Tibial torsion","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Floppiness/hypotonia is defined as reduced resistance to passive movement of joints. Physical examination of floppy/hypotonic infants shows head lag, lack of shoulder and elbow muscle contraction on traction response, inability to tighten the shoulder girdle muscles (or slipping through) when held under the axillae, scarf sign (when the arm is pulled to the opposite side, the arm wraps around the neck with the elbow crossing midline), hyperdorsiflexion of the feet, easy apposition of the thumb against the forearm, feet touching the cheek with ease and without discomfort, frog leg position, and inverted U sign on ventral suspension (head, arms, and legs hanging down without elbow or knee flexion and the trunk rounded in a dome shape).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008947","HPO_Synonym__c":"Decreased muscle tone in infant; Hypotonia early; Hypotonia in infancy; Hypotonia, early; Infantile hypotonia; Infantile muscular hypotonia","HPO_Name__c":"Floppy infant","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Continuous involuntary sustained muscle contraction. When an affected muscle is passively stretched, the degree of resistance remains constant regardless of the rate at which the muscle is stretched. This feature helps to distinguish rigidity from muscle spasticity.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002063","HPO_Synonym__c":"Muscle rigidity; Rigidity","HPO_Name__c":"Rigidity","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A focal-onset seizure is a type of seizure originating within networks limited to one hemisphere. They may be discretely localized or more widely distributed, and may originate in subcortical structures.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007359","HPO_Synonym__c":"Focal onset seizure; Focal seizure; Focal seizures; Focal-onset seizures; Partial seizure; Partial seizures; Seizure affecting one half of brain","HPO_Name__c":"Focal-onset seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Structural abnormality of the hippocampus related to defective development.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0025101","HPO_Synonym__c":"Hippocampal dysgenesis","HPO_Name__c":"Dysgenesis of the hippocampus","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A tremor present when the limbs are active, either when outstretched in a certain position or throughout a voluntary movement.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002345","HPO_Name__c":"Action tremor","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A type of focal clonic seizure characterized by sustained rhythmic jerking rapidly involves one side of the body at seizure onset.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006813","HPO_Synonym__c":"Hemiclonic seizure; Hemiclonic seizures; Unilateral clonic seizure; Unilateral clonic seizures","HPO_Name__c":"Focal hemiclonic seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Characteristic neurologic anomaly resulting from degeneration of dopamine-generating cells in the substantia nigra, a region of the midbrain, characterized clinically by shaking, rigidity, slowness of movement and difficulty with walking and gait.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001300","HPO_Name__c":"Parkinsonism","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A type of gait ataxia displaying progression of clinical severity.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007240","HPO_Synonym__c":"Gait ataxia, progressive","HPO_Name__c":"Progressive gait ataxia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Epileptiform activity refers to distinctive EEG waves or complexes distinguished from background activity found in in a proportion of human subjects with epilepsy, but which can also be found in subjects without seizures. Interictal epileptiform activity refers to such activity that occurs in the absence of a clinical or subclinical seizure.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011182","HPO_Synonym__c":"Epileptiform EEG discharges","HPO_Name__c":"Interictal epileptiform activity","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_EEG"}},{"Provided_By__c":"ORPHA:33069","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Focal impaired awareness seizure (or focal seizure with impaired or lost awareness) is a type of focal-onset seizure characterized by some degree (which may be partial) of impairment of the person's awareness of themselves or their surroundings at any point during the seizure.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002384","HPO_Synonym__c":"Complex focal seizures; Complex partial seizure; Complex partial seizures; Dyscognitive seizures; Focal dyscognitive seizure; Focal impaired awareness seizures; Focal seizure with impairment of awareness; Focal seizure with loss of awareness; Focal seizures with impairment of consciousness or awareness; Localised dyscognitive seizure; Localised seizure with impaired awareness; Localised seizure with loss of awareness; Localized dyscognitive seizure; Localized seizure with impaired awareness; Localized seizure with loss of awareness; Partial dyscognitive seizure; Partial seizure with impairment of awareness; Partial seizure with loss of awareness","HPO_Name__c":"Focal impaired awareness seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Account":["Epilepsy"],"Specialist":["Epilepsy","Neurodevelopmental disabilities","Pediatrics"]},"synonyms":["dravet"," dravet syndrome"," drvt"," ds"," ds - dravet syndrome"," epileptic encephalopathy, early infantile, 6 (dravet syndrome)"," myoclonic epilepsy, severe, of infancy"," severe myoclonic epilepsy of infancy"," severe myoclonus epilepsy of infancy"," sme"," smeb"," smei"],"spanishId":13190,"spanishName":"sindrome-de-dravet"}