{"Name":"Familial dysautonomia","DiseaseID__c":"GARD:0007581","id":7581,"encodedName":"familial-dysautonomia","IsDeleted":false,"Disease_Name_Full__c":"Familial dysautonomia","Xref_IDs__c":"29159009; C0013364; C84706; D004402; DOID:11589; G90.1; MEDGEN:41678; MONDO:0009131; NBK1180; OMIM:223900; ORPHA:1764","USA_Estimate__c":"200,000","No_of_Specialist_Tagsa__c":6,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":1,"No_of_HHS_records__c":1,"World_Estimate__c":"800,000 to 5,000,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":3,"No_of_Disease_Descriptions__c":5,"Disease_Characteristics_Score__c":8,"No_of_Age_at_Onset__c":3,"Description_Source__c":"MONDO:0009131","Disease_Description__c":"A congenital disorder caused by mutations in the IKBKAP gene. It is characterized by damage of the sympathetic and parasympathetic and sensory nervous system.","GARD_Name__c":"Familial dysautonomia","GARD_Synonym__c":"dominant hereditary sensory neuropathy, type iii; dysautonomia, familial; fd; hereditary sensory and autonomic neuropathy 3; hereditary sensory and autonomic neuropathy type 3; hereditary sensory and autonomic neuropathy type iii; hereditary sensory and autonomic neuropathy, type iii; hereditary sensory neuropathy type 3; hsan 3; hsan iii; hsan3; hsn 3; neuropathy, hereditary sensory and autonomic, type 3; neuropathy, hereditary sensory and autonomic, type iii; riley day syndrome; riley-day syndrome","Curated_Disease_Description_Source__c":"GARD:0007581","Curated_Disease_Description__c":"Familial dysautonomia is a genetic disorder that affects the development and survival of certain nerve cells. The disorder disturbs cells in the autonomic nervous system, which controls involuntary actions such as digestion, breathing, production of tears, and the regulation of blood pressure and body temperature. It also affects the sensory nervous system, which controls activities related to the senses, such as taste and the perception of pain, heat, and cold. Familial dysautonomia is also called hereditary sensory and autonomic neuropathy, type III. Problems related to this disorder first appear during infancy. Early signs and symptoms include poor muscle tone (hypotonia), feeding difficulties, poor growth, lack of tears, frequent lung infections, and difficulty maintaining body temperature. Older infants and young children with familial dysautonomia may hold their breath for prolonged periods of time, which may cause a bluish appearance of the skin or lips (cyanosis) or fainting. This breath-holding behavior usually stops by age 6. Developmental milestones, such as walking and speech, are usually delayed, although some affected individuals show no signs of developmental delay. Additional signs and symptoms in school-age children include bed wetting, episodes of vomiting, reduced sensitivity to temperature changes and pain, poor balance, abnormal curvature of the spine (scoliosis), poor bone quality and increased risk of bone fractures, and kidney and heart problems. Affected individuals also have poor regulation of blood pressure. They may experience a sharp drop in blood pressure upon standing (orthostatic hypotension), which can cause dizziness, blurred vision, or fainting. They can also have episodes of high blood pressure when nervous or excited, or during vomiting incidents. About one-third of children with familial dysautonomia have learning disabilities, such as a short attention span, that require special education classes. By adulthood, affected individuals often have increasing difficulties with balance and walking unaided. Other problems that may appear in adolescence or early adulthood include lung damage due to repeated infections, impaired kidney function, and worsening vision due to the shrinking size (atrophy) of optic nerves, which carry information from the eyes to the brain.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"200,000","Age_at_Onset_Snippet_Text__c":"from Birth to Childhood","SourceID__c":"ORPHA:1764","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0009131","ORPHANET_ID__c":"ORPHA:1764","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Disautonomía familiar","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"disautonomía familiar","Spanish_GARD_Synonym__c":"hsan3; neuropatía sensitiva autonómica hereditaria tipo 3; neuropatía sensitiva autonómica hereditaria tipo iii; síndrome de riley-day","Category_Linearization__c":"ORPHA:98006","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":"Familial dysautonomia is a genetic disorder that affects the development and survival of certain nerve cells. The disorder disturbs cells in the autonomic nervous system, which controls involuntary actions such as digestion, breathing, production of tears, and the regulation of blood pressure and body temperature. It also affects the sensory nervous system, which controls activities related to the senses, such as taste and the perception of pain, heat, and cold. Familial dysautonomia is also called hereditary sensory and autonomic neuropathy, type III. Problems related to this disorder first appear during infancy. Early signs and symptoms include poor muscle tone (hypotonia), feeding difficulties, poor growth, lack of tears, frequent lung infections, and difficulty maintaining body temperature. Older infants and young children with familial dysautonomia may hold their breath for prolonged periods of time, which may cause a bluish appearance of the skin or lips (cyanosis) or fainting. This breath-holding behavior usually stops by age 6. Developmental milestones, such as walking and speech, are usually delayed, although some affected individuals show no signs of developmental delay. Additional signs and symptoms in school-age children include bed wetting, episodes of vomiting, reduced sensitivity to temperature changes and pain, poor balance, abnormal curvature of the spine (scoliosis), poor bone quality and increased risk of bone fractures, and kidney and heart problems. Affected individuals also have poor regulation of blood pressure. They may experience a sharp drop in blood pressure upon standing (orthostatic hypotension), which can cause dizziness, blurred vision, or fainting. They can also have episodes of high blood pressure when nervous or excited, or during vomiting incidents. About one-third of children with familial dysautonomia have learning disabilities, such as a short attention span, that require special education classes. By adulthood, affected individuals often have increasing difficulties with balance and walking unaided. Other problems that may appear in adolescence or early adulthood include lung damage due to repeated infections, impaired kidney function, and worsening vision due to the shrinking size (atrophy) of optic nerves, which carry information from the eyes to the brain.","Curated_Disease_Description_Source__c":"GARD:0007581","GARD_Synonym__c":"dominant hereditary sensory neuropathy, type iii; dysautonomia, familial; fd; hereditary sensory and autonomic neuropathy 3; hereditary sensory and autonomic neuropathy type 3; hereditary sensory and autonomic neuropathy type iii; hereditary sensory and autonomic neuropathy, type iii; hereditary sensory neuropathy type 3; hsan 3; hsan iii; hsan3; hsn 3; neuropathy, hereditary sensory and autonomic, type 3; neuropathy, hereditary sensory and autonomic, type iii; riley day syndrome; riley-day syndrome","Name":"Familial dysautonomia","Curated_USA_Estimate__c":"200,000","estimateUsa":"200,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Familial Dysautonomia Foundation","Website__c":"http://www.familialdysautonomia.org/"},{"Account_Name__c":"Dysautonomia Youth Network of America","Website__c":"https://www.dynainc.org/"},{"Account_Name__c":"Dysautonomia International","Website__c":"https://www.dysautonomiainternational.org/"},{"Account_Name__c":"Familial Dysautonomia NOW Foundation","Website__c":"http://www.fdnow.org"},{"Account_Name__c":"The Foundation for Peripheral Neuropathy","Website__c":"https://www.foundationforpn.org"},{"Account_Name__c":"Dysautonomia Information Network","Website__c":"https://www.dinet.org/"}],"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":"Ophthalmology","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Dermatology","Tag_Category__c":"Account;Disease Category;Specialist","category_description":"Skin diseases, or integumentary system diseases, affect the skin, hair, nails, sweat glands, or oil glands.","curated_tag_name":"Skin diseases"},{"Tag_Name__c":"Peripheral Neuropathy","Tag_Category__c":"Account","curated_tag_name":"Peripheral neuropathy"},{"Tag_Name__c":"Anterior segment of Eye","Tag_Category__c":"Specialist","curated_tag_name":"Front part of eye disease"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:1764"},{"Age_At_Onset__c":"Childhood","Provided_By__c":"ORPHA:1764"},{"Age_At_Onset__c":"Neonatal","Provided_By__c":"ORPHA:1764"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C0013364"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0007581","Source__c":"RareSource"},{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK1180","Source__c":"Gene Review","Xref__c":"NBK1180"},{"URL__c":"https://www.orpha.net/en/disease/detail/1764","Source__c":"C0013364; MONDO:0009131; ORPHA:1764","Xref__c":"ORPHA:1764"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=41678","Source__c":"C0013364","Xref__c":"MEDGEN:41678"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=29159009","Source__c":"C0013364; MONDO:0009131","Xref__c":"29159009"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C004402","Source__c":"C0013364; MONDO:0009131","Xref__c":"D004402"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C84706","Source__c":"C0013364; MONDO:0009131","Xref__c":"C84706"},{"URL__c":"https://www.omim.org/entry/223900","Source__c":"C0013364; MONDO:0009131; ORPHA:1764","Xref__c":"OMIM:223900"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A11589","Source__c":"MONDO:0009131","Xref__c":"DOID:11589"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C0013364","Source__c":"C0013364","Xref__c":"C0013364"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0009131","Source__c":"GARD:0007581","Xref__c":"MONDO:0009131"},{"URL__c":"http://purl.bioontology.org/ontology/ICD10CM/G90.1","Source__c":"MONDO:0009131","Xref__c":"G90.1"},{"URL__c":"https://medlineplus.gov/genetics/condition/familial-dysautonomia","Source__c":"GARD:0007581","Xref__c":"https://medlineplus.gov/genetics/condition/familial-dysautonomia"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"ELP1","GHR_URL__c":"https://medlineplus.gov/genetics/gene/elp1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality of refraction characterized by the ability to see objects nearby clearly, while objects in the distance appear blurry.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000545","HPO_Synonym__c":"Close sighted; Near sighted; Near sightedness; Nearsightedness","HPO_Name__c":"Myopia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An erosion or abrasion of the cornea's outermost layer of epithelial cells.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0200020","HPO_Synonym__c":"Damage to outer layer of the cornea of the eye","HPO_Name__c":"Corneal erosion","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Absence of tear secretion.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000522","HPO_Synonym__c":"Absence of tears in the eyes; Absent lacrimal fluids; Absent tear secretion","HPO_Name__c":"Alacrima","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of the pupil.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000615","HPO_Synonym__c":"Abnormal pupillary morphology; Abnormality of the pupil; Pupillary abnormalities; Pupillary abnormality","HPO_Name__c":"Abnormal pupil morphology","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A reduction of corneal clarity.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007957","HPO_Synonym__c":"Corneal clouding; Corneal opacities; Reduction of corneal clarity; Scarring or clouding of the cornea of the eye","HPO_Name__c":"Corneal opacity","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Atrophy of the optic nerve. Optic atrophy results from the death of the retinal ganglion cell axons that comprise the optic nerve and manifesting as a pale optic nerve on fundoscopy.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000648","HPO_Synonym__c":"Optic nerve atrophy; Optic-nerve degeneration","HPO_Name__c":"Optic atrophy","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Atypical behavior is an abnormality in a person's actions that can be controlled or modulated by the will of the individual. While abnormal behaviors can be difficult to control, they are distinct from other abnormal actions that cannot be affected by the individual's will.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000708","HPO_Synonym__c":"Behavioral abnormality; Behavioral changes; Behavioral disorders; Behavioral disturbances; Behavioral problems; Behavioral symptoms; Behavioral/psychiatric abnormalities; Behavioural symptoms; Behavioural/Psychiatric abnormality; Psychiatric disorders; Psychiatric disturbances","HPO_Name__c":"Atypical behavior","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Inflammatory or noninflammatory diseases affecting the glomeruli of the nephron.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100820","HPO_Synonym__c":"Diseased glomeruli","HPO_Name__c":"Glomerulopathy","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The repeated occurrence of bone fractures (implying an abnormally increased tendency for fracture).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002757","HPO_Synonym__c":"Frequent fractures; Increased fracture rate; Increased fractures; Multiple fractures; Multiple spontaneous fractures; Recurrent fractures; Varying degree of multiple fractures","HPO_Name__c":"Recurrent fractures","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormal excessive perspiration (sweating) despite the lack of appropriate stimuli like hot and humid weather.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000975","HPO_Synonym__c":"Diaphoresis; Excessive sweating; Increased sweating; Profuse sweating; Sweating; Sweating profusely; Sweating, increased","HPO_Name__c":"Hyperhidrosis","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Ataxia refers to impaired coordination of voluntary muscle movement. Cerebellar ataxia refers to ataxia due to dysfunction of the cerebellum. This causes a variety of elementary neurological deficits including asynergy (lack of coordination between muscles, limbs and joints), dysmetria (lack of ability to judge distances that can lead to under- or overshoot in grasping movements), and dysdiadochokinesia (inability to perform rapid movements requiring antagonizing muscle groups to be switched on and off repeatedly).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001251","HPO_Synonym__c":"Cerebellar ataxia","HPO_Name__c":"Ataxia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Malignant hyperthermia is characterized by a rapid increase in temperature to 39-42 degrees C. Malignant hyperthermia may occur in response to either inhalational anesthetics such as halothane, to muscle relaxants such as succinylcholine, or to exercise.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002047","HPO_Name__c":"Malignant hyperthermia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormally decreased sodium concentration in the blood.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002902","HPO_Synonym__c":"Low blood sodium levels","HPO_Name__c":"Hyponatremia","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality of the pulmonary pleura, the thin, transparent membrane which covers the lungs and lines the inside of the chest walls.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002103","HPO_Synonym__c":"Abnormality of the pleura","HPO_Name__c":"Abnormal pleura morphology","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A rapid heartrate that exceeds the range of the normal resting heartrate for age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001649","HPO_Synonym__c":"Fast heart rate; Heart racing; Racing heart","HPO_Name__c":"Tachycardia","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Reduction of neurologic reflexes such as the knee-jerk reaction.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001265","HPO_Synonym__c":"Decreased reflex response; Decreased reflexes","HPO_Name__c":"Hyporeflexia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormally diminished capacity to sweat.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000966","HPO_Synonym__c":"Decreased ability to sweat; Decreased sweating; Impaired sweating; Inadequate sweating; Oligohidrosis; Sweating, decreased","HPO_Name__c":"Hypohidrosis","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A reduction in the level of performance of the kidneys in areas of function comprising the concentration of urine, removal of wastes, the maintenance of electrolyte balance, homeostasis of blood pressure, and calcium metabolism.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000083","HPO_Synonym__c":"Renal failure; Renal failure in adulthood","HPO_Name__c":"Renal insufficiency","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality of the kidney.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000077","HPO_Synonym__c":"Abnormal kidney; Abnormality of the kidney; Renal anomalies; Renal anomaly","HPO_Name__c":"Abnormality of the kidney","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A disease where there is cellular death (necrosis) of bone components due to interruption of the blood supply.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010885","HPO_Synonym__c":"Aseptic bone necrosis; Aseptic necrosis; Bone infarction; Death of bone due to decreased blood supply; Ischemic bone necrosis; Osteochondronecrosis; Osteonecrosis","HPO_Name__c":"Avascular necrosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","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; 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Decreased pinprick sensation; Impaired pain sensation","HPO_Name__c":"Impaired pain sensation","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Peripheral neuropathy is a general term for any disorder of the peripheral nervous system. The main clinical features used to classify peripheral neuropathy are distribution, type (mainly demyelinating versus mainly axonal), duration, and course.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0009830","HPO_Synonym__c":"Peripheral nerve damage; Peripheral neuritis","HPO_Name__c":"Peripheral neuropathy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A form of hypotension characterized by a sudden fall in blood pressure that occurs when a person assumes a standing position.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001278","HPO_Synonym__c":"Decrease in blood pressure upon standing up; Postural hypotension","HPO_Name__c":"Orthostatic hypotension","Feature_System__c":"Nervous System; Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Heterochromia iridis is a difference in the color of the iris in the two eyes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001100","HPO_Synonym__c":"Different colored eyes; Heterochromia irides","HPO_Name__c":"Heterochromia iridis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An increased susceptibility to respiratory infections as manifested by a history of recurrent respiratory infections.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002205","HPO_Synonym__c":"Frequent respiratory infections; Multiple respiratory infections; Recurrent respiratory infections; respiratory infections, recurrent; Susceptibility to respiratory infections","HPO_Name__c":"Recurrent respiratory infections","Feature_System__c":"Respiratory system; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A deficiency or slowing down of growth pre- and postnatally.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001510","HPO_Synonym__c":"Delayed growth; Growth deficiency; Growth delay; Growth failure; Growth retardation; Poor growth; Retarded growth","HPO_Name__c":"Growth delay","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality of the peritoneum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002585","HPO_Synonym__c":"Abnormality of the peritoneum","HPO_Name__c":"Abnormal peritoneum morphology","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Frequent (30-79%)","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:1764","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The presence of an abnormal lateral curvature of the spine.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002650","HPO_Name__c":"Scoliosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Bluish discoloration of the skin of the hands or feet.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001063","HPO_Synonym__c":"Persistent blue color of hands or feet","HPO_Name__c":"Acrocyanosis","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001252","HPO_Synonym__c":"Low muscle tone; Low or weak muscle tone; Muscle hypotonia; Muscular hypotonia","HPO_Name__c":"Hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Osteolysis refers to the destruction of bone through bone resorption with removal or loss of calcium.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002797","HPO_Synonym__c":"Breakdown of bone; Increased bone resorption; Osteolytic defects of bones","HPO_Name__c":"Osteolysis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Impaired feeding performance of an infant as manifested by difficulties such as weak and ineffective sucking, brief bursts of sucking, and falling asleep during sucking. There may be difficulties with chewing or maintaining attention.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008872","HPO_Name__c":"Feeding difficulties in infancy","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:1764","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A condition in which the stomach contents leak backwards from the stomach into the esophagus through the lower esophageal sphincter.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002020","HPO_Synonym__c":"Acid reflux; Acid reflux disease; Gastro-esophageal reflux; Gastroesophageal reflux disease; GERD; GORD; Heartburn","HPO_Name__c":"Gastroesophageal reflux","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology","Dermatology"],"Specialist":["Genetics","Neurology","Ophthalmology","Dermatology","Anterior segment of Eye","Pediatrics"],"Account":["Dermatology","Peripheral Neuropathy"]},"synonyms":["dominant hereditary sensory neuropathy, type iii"," dysautonomia, familial"," fd"," hereditary sensory and autonomic neuropathy 3"," hereditary sensory and autonomic neuropathy type 3"," hereditary sensory and autonomic neuropathy type iii"," hereditary sensory and autonomic neuropathy, type iii"," hereditary sensory neuropathy type 3"," hsan 3"," hsan iii"," hsan3"," hsn 3"," neuropathy, hereditary sensory and autonomic, type 3"," neuropathy, hereditary sensory and autonomic, type iii"," riley day syndrome"," riley-day syndrome"]}