{"Name":"Sporadic infantile bilateral striatal necrosis","DiseaseID__c":"GARD:0020549","id":20549,"encodedName":"sporadic-infantile-bilateral-striatal-necrosis","IsDeleted":false,"Disease_Name_Full__c":"Sporadic infantile bilateral striatal necrosis","Xref_IDs__c":"1010642001; C4087175; MEDGEN:1672494; MONDO:0016394; ORPHA:225147","USA_Estimate__c":"5,000","No_of_Specialist_Tagsa__c":4,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":0,"World_Estimate__c":"8,000 to 80,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":0,"No_of_Disease_Descriptions__c":3,"Disease_Characteristics_Score__c":5,"No_of_Age_at_Onset__c":1,"Description_Source__c":"MONDO:0016394","Disease_Description__c":"Sporadic infantile bilateral necrosis is the sporadic form of infantile bilateral striatal necrosis (IBSN; see this term), a syndrome of bilateral symmetric spongy degeneration of the caudate nucleaus, putamen and globus pallidus characterized by developmental regression, choreoathetosis and dystonia progressing to spastic quadriparesis.","GARD_Name__c":"Sporadic infantile bilateral striatal necrosis","GARD_Synonym__c":"absn; acute bilateral striatal necrosis; sporadic ibsn; sporadic infantile striatonigral degeneration; sporadic infantile striatonigral necrosis","Curated_Disease_Description_Source__c":"ORPHA:225147","Curated_Disease_Description__c":"Sporadic infantile bilateral striatal necrosis is the sporadic form of infantile bilateral striatal necrosis (IBSN), a syndrome of bilateral symmetric spongy degeneration of the caudate nucleaus, putamen and globus pallidus characterized by developmental regression, choreoathetosis and dystonia progressing to spastic quadriparesis.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"5,000","Age_at_Onset_Snippet_Text__c":"at any time in life","SourceID__c":"ORPHA:225147","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0016394","ORPHANET_ID__c":"ORPHA:225147","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Necrosis estriatal bilateral esporádica infantil","Spanish_Description_Source__c":"ORPHA:225147","Spanish_Description__c":"La necrosis estriatal bilateral infantil esporádica es la forma esporádica de la necrosis estriatal bilateral infantil (IBSN) (consulte este término), un síndrome de degeneración esponjosa bilateral y simétrica del núcleo caudado, el putamen y el globo pálido, caracterizado por regresión en el desarrollo, coreoatetosis y distonía que conduce a cuadriparesia espástica.","Spanish_Disease_Name__c":"necrosis estriatal bilateral esporádica infantil","Spanish_GARD_Synonym__c":"absn; degeneración estriatonigral esporádica infantil; ibsn esporádica; necrosis estriatal bilateral aguda; necrosis estriatonigral esporádica infantil","Category_Linearization__c":"ORPHA:93890","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":"Sporadic infantile bilateral striatal necrosis is the sporadic form of infantile bilateral striatal necrosis (IBSN), a syndrome of bilateral symmetric spongy degeneration of the caudate nucleaus, putamen and globus pallidus characterized by developmental regression, choreoathetosis and dystonia progressing to spastic quadriparesis.","Curated_Disease_Description_Source__c":"ORPHA:225147","GARD_Synonym__c":"absn; acute bilateral striatal necrosis; sporadic ibsn; sporadic infantile striatonigral degeneration; sporadic infantile striatonigral necrosis","Name":"Sporadic infantile bilateral striatal necrosis","Curated_USA_Estimate__c":"5,000","estimateUsa":"5,000"}],"GARD_Disease_Tag__c":[{"Tag_Name__c":"Genetics","Tag_Category__c":"Cause;Disease Category;Specialist","category_description":"Genetic diseases affect the DNA, or genetic instructions, which directs how tissues, organs, and body systems function.","curated_tag_name":"Genetic diseases"},{"Tag_Name__c":"Neurology","Tag_Category__c":"Disease Category;Specialist","category_description":"Neurological diseases affect the brain, spinal cord, cranial nerves, autonomic nerves, or other peripheral nerves.","curated_tag_name":"Neurological diseases"},{"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":"All ages","Provided_By__c":"ORPHA:225147"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=1672494","Source__c":"C4087175","Xref__c":"MEDGEN:1672494"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C4087175","Source__c":"C4087175","Xref__c":"C4087175"},{"URL__c":"https://www.orpha.net/en/disease/detail/225147","Source__c":"C4087175; MONDO:0016394; ORPHA:225147","Xref__c":"ORPHA:225147"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=1010642001","Source__c":"C4087175","Xref__c":"1010642001"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0016394","Source__c":"GARD:0020549","Xref__c":"MONDO:0016394"}],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormally diminished level of attention, responsiveness, or wakefulness.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004372","HPO_Synonym__c":"Disturbances of consciousness; Lowered consciousness; Reduced consciousness/confusion","HPO_Name__c":"Reduced consciousness","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","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:225147","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An increased susceptibility to upper respiratory tract infections as manifested by a history of recurrent upper respiratory tract infections (running ears - otitis, sinusitis, pharyngitis, tonsillitis).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002788","HPO_Synonym__c":"Frequent upper respiratory infections; Frequent upper respiratory tract infections; Recurrent colds; Recurrent upper respiratory and lower respiratory infections; Recurrent upper respiratory infection; Recurrent upper respiratory infections; Recurrent URI; Upper respiratory tract infections; Upper respiratory tract infections, recurrent","HPO_Name__c":"Recurrent upper respiratory tract infections","Feature_System__c":"Respiratory system; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Paralysis (complete loss of muscle function) in the arm, leg, and in some cases the face on one side of the body.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002301","HPO_Synonym__c":"Paralysis on one side of body","HPO_Name__c":"Hemiplegia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A lack of facial expression often with staring eyes and a slightly open mouth.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000298","HPO_Synonym__c":"Amimia; Expressionless face; Lack of facial expression; Mask-like facial appearance; Masklike facies","HPO_Name__c":"Mask-like facies","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The condition of inability to eat normally treated by placement of a thin tube through the nose into the stomach that is then used to carry food.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0040288","HPO_Name__c":"Nasogastric tube feeding","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormally increased muscular tone that causes fixed abnormal postures. There is a slow, intermittent twisting motion that leads to exaggerated turning and posture of the extremities and trunk.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001332","HPO_Synonym__c":"Dystonic movements","HPO_Name__c":"Dystonia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Loss of the ability to control the urinary bladder leading to involuntary urination.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000020","HPO_Synonym__c":"Bladder incontinence; Loss of bladder control","HPO_Name__c":"Urinary incontinence","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Atypical absence status epilepticus is a type of generalized non-convulsive status epilepticus without coma that is semiologically a prolonged atypical absence seizure.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011151","HPO_Synonym__c":"Obtundation status","HPO_Name__c":"Atypical absence status epilepticus","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The term gait disturbance can refer to any disruption of the ability to walk.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001288","HPO_Synonym__c":"Abnormal gait; Abnormal walk; Difficulty in walking; Gait abnormalities; Gait difficulties; Gait disturbances; Impaired gait; Walking disability","HPO_Name__c":"Gait disturbance","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001250","HPO_Synonym__c":"Epileptic seizure; Seizures","HPO_Name__c":"Seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Inflammation (due to infection or irritation) of the pharynx.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0025439","HPO_Name__c":"Pharyngitis","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A resting tremor occurs when muscles are at rest and becomes less noticeable or disappears when the affected muscles are moved. Resting tremors are often slow and coarse.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002322","HPO_Synonym__c":"Rest tremor; Resting tremor; Tremor at rest","HPO_Name__c":"Resting tremor","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Difficulty in swallowing.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002015","HPO_Synonym__c":"Difficulty swallowing; Poor swallowing; Swallowing difficulties; Swallowing difficulty","HPO_Name__c":"Dysphagia","Feature_System__c":"Nervous System; Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Dysarthric speech is a general description referring to a neurological speech disorder characterized by poor articulation. Depending on the involved neurological structures, dysarthria may be further classified as spastic, flaccid, ataxic, hyperkinetic and hypokinetic, or mixed.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001260","HPO_Synonym__c":"Difficulty articulating speech; Dysarthric speech","HPO_Name__c":"Dysarthria","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A type of ataxia characterized by the impairment of the ability to coordinate the movements required for normal walking. Gait ataxia is characteirzed by a wide-based staggering gait with a tendency to fall.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002066","HPO_Synonym__c":"Ataxia of gait; Ataxic gait; Inability to coordinate movements when walking","HPO_Name__c":"Gait ataxia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Nodding movement of the head or body.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0030187","HPO_Name__c":"Titubation","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","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:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Complete lack of speech or verbal communication in a person despite attempts to engage in conversation. Mutism as a phenomena assumes the individual has previous capacity for speech and in the pediatric population it assumes that the person is past the age of typical language development.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002300","HPO_Synonym__c":"Inability to speak; Muteness","HPO_Name__c":"Mutism","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Involuntary flexion or extension of the arms and legs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002533","HPO_Name__c":"Abnormal posturing","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A progressive degree of muscular rigidity (continuous contraction of muscles with constant resistance to passive movement).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007158","HPO_Synonym__c":"Progressive extrapyramidal rigidity","HPO_Name__c":"Progressive extrapyramidal muscular rigidity","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000273","HPO_Synonym__c":"Facial grimacing","HPO_Name__c":"Facial grimacing","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A reduced degree of motion of the muscles beneath the skin of the face, often associated with reduced facial crease formation.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000338","HPO_Synonym__c":"Dull facial expression; Hypomimia","HPO_Name__c":"Hypomimic face","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","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:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Increased susceptibility to streptococcus pneumoniae infections as manifested by a history of recurrent infections by streptococcus pneumoniae.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005366","HPO_Name__c":"Recurrent streptococcus pneumoniae infections","Feature_System__c":"Respiratory system; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Chorea (Greek for 'dance') refers to widespread arrhythmic involuntary movements of a forcible, jerky and restless fashion. It is a random-appearing sequence of one or more discrete involuntary movements or movement fragments. Movements appear random because of variability in timing, duration or location. Each movement may have a distinct start and end. However, movements may be strung together and thus may appear to flow randomly from one muscle group to another. Chorea can involve the trunk, neck, face, tongue, and extremities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002072","HPO_Synonym__c":"Choreic movements; Choreiform movements","HPO_Name__c":"Chorea","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","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:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002465","HPO_Synonym__c":"Poor speech","HPO_Name__c":"Poor speech","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An inadequate sucking reflex, resulting in the difficult of newborns to be breast-fed.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002033","HPO_Synonym__c":"Poor suck; Poor sucking; Sucking weakness","HPO_Name__c":"Poor suck","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Hyperreflexia is the presence of hyperactive stretch reflexes of the muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001347","HPO_Synonym__c":"Increased deep tendon reflexes; Increased reflexes","HPO_Name__c":"Hyperreflexia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Impairment of certain skills such as reading or writing, coordination, self-control, or attention that interfere with the ability to learn. The impairment is not related to a global deficiency of intelligence.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001328","HPO_Name__c":"Specific learning disability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Loss of awareness of oneself or one's surroundings, involving (i) a loss of normal motor control is evident as flaccidity or stiffness, either of which can be accompanied by jerking movements, and postural control is lost so that patients fall if they are in an upright position; (ii) normal responsiveness is lost; and (iii) the patient experiences amnesia for the event. Loss of consciousness my be transitory (e.g., syncope) or prolonged.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007185","HPO_Synonym__c":"Fainting; Loss of consciousness; Passing out","HPO_Name__c":"Loss of consciousness","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Uncontrolled episodes of crying occur without any apparent motivating stimuli.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0030215","HPO_Synonym__c":"Cry frequently for no reason; Cry frequently without apparent cause; Cry frequently without cause; Cry frequently without reason; Frequently cries for no reason; Frequently cries without apparent cause; Frequently cries without cause; Frequently cries without reason; Inappropriate crying","HPO_Name__c":"Inappropriate crying","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of movement with a neurological basis characterized by changes in coordination and speed of voluntary movements.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100022","HPO_Synonym__c":"Abnormality of movement; Movement disorder; Unusual movement","HPO_Name__c":"Abnormality of movement","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","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:225147","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:225147","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Upturning of the big toe (and sometimes fanning of the other toes) in response to stimulation of the sole of the foot. If the Babinski sign is present it can indicate damage to the corticospinal tract.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003487","HPO_Synonym__c":"Extensor plantar reflexes; Extensor plantar response; Extensor plantar responses; Positive Babinski sign","HPO_Name__c":"Babinski sign","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:225147","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Muscular hypotonia (abnormally low muscle tone) affecting the musculature of the trunk.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008936","HPO_Synonym__c":"Low muscle tone in trunk; Muscular hypotonia of the trunk; Truncal hypotonia","HPO_Name__c":"Axial hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology"],"Specialist":["Genetics","Neurology","Neurodevelopmental disabilities","Pediatrics"]},"synonyms":["absn"," acute bilateral striatal necrosis"," sporadic ibsn"," sporadic infantile striatonigral degeneration"," sporadic infantile striatonigral necrosis"]}