{"Name":"Usher syndrome","DiseaseID__c":"GARD:0007843","id":7843,"encodedName":"usher-syndrome","IsDeleted":false,"Disease_Name_Full__c":"Usher syndrome","Xref_IDs__c":"C85217; CN469326; D052245; DOID:0050439; MEDGEN:1876539; MONDO:0019501; OMIMPS:276900; ORPHA:886","USA_Estimate__c":"50,000","No_of_Specialist_Tagsa__c":5,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":3,"World_Estimate__c":"80,000 to 800,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":3,"No_of_Disease_Descriptions__c":5,"Disease_Characteristics_Score__c":7,"No_of_Age_at_Onset__c":3,"Description_Source__c":"MONDO:0019501","Disease_Description__c":"A rare ciliopathy characterized by congenital or childhood onset sensorineural hearing loss (HL) and retinitis pigmentosa (RP) that occurs in a second step with a night blindness and a progressive vision loss and, in some cases, vestibular dysfunction.","GARD_Name__c":"Usher syndrome","GARD_Synonym__c":"retinitis pigmentosa-hearing loss syndrome; ush; usher syndromes; usher's syndrome","Curated_Disease_Description_Source__c":"GARD:0007843","Curated_Disease_Description__c":"Usher syndrome is a condition characterized by partial or total hearing loss and vision loss that worsens over time. The hearing loss is classified as sensorineural, which means that it is caused by abnormalities of the inner ear. The loss of vision is caused by an eye disease called retinitis pigmentosa (RP), which affects the layer of light-sensitive tissue at the back of the eye (the retina). Vision loss occurs as the light-sensing cells of the retina gradually break down. Loss of night vision begins first, followed by blind spots that develop in the side (peripheral) vision. Over time, these blind spots enlarge and merge to produce tunnel vision. In some cases, vision is further impaired by clouding of the lens of the eye (cataracts). However, many people with retinitis pigmentosa retain some central vision throughout their lives. Researchers have identified three major types of Usher syndrome, designated as types I, II, and III. These types are distinguished by the severity of hearing loss, the presence or absence of balance problems, and the age at which signs and symptoms appear. The types are further divided into subtypes based on their genetic cause. Most individuals with Usher syndrome type I are born with severe to profound hearing loss. Worsening vision loss caused by retinitis pigmentosa becomes apparent in childhood. This type of Usher syndrome also causes abnormalities of the vestibular system, which is the part of the inner ear that helps maintain the bodys balance and orientation in space. As a result of the vestibular abnormalities, children with the condition have trouble with balance. They begin sitting independently and walking later than usual, and they may have difficulty riding a bicycle and playing certain sports. Usher syndrome type II is characterized by hearing loss from birth and progressive vision loss that begins in adolescence or adulthood. The hearing loss associated with this form of Usher syndrome ranges from mild to severe and mainly affects the ability to hear high-frequency sounds. For example, it is difficult for affected individuals to hear high, soft speech sounds, such as those of the letters d and t. The degree of hearing loss varies within and among families with this condition, and it may become more severe over time. Unlike the other forms of Usher syndrome, type II is not associated with vestibular abnormalities that cause difficulties with balance. People with Usher syndrome type III experience hearing loss and vision loss beginning somewhat later in life. Unlike the other forms of Usher syndrome, type III is usually associated with normal hearing at birth. Hearing loss typically begins during late childhood or adolescence, after the development of speech, and becomes more severe over time. By middle age, most affected individuals have profound hearing loss. Vision loss caused by retinitis pigmentosa also develops in late childhood or adolescence. Some people with Usher syndrome type III develop vestibular abnormalities that cause problems with balance.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"50,000","Age_at_Onset_Snippet_Text__c":"from Birth to Childhood","SourceID__c":"ORPHA:886","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Grouping","MONDO_ID__c":"MONDO:0019501","ORPHANET_ID__c":"ORPHA:886","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Síndrome de usher","Spanish_Description_Source__c":"ORPHA:886","Spanish_Description__c":"Es una ciliopatía poco frecuente caracterizada por una hipoacusia neurosensorial congénita o de inicio en la infancia y retinosis pigmentaria (RP) que se presenta en una segunda fase con ceguera nocturna y pérdida de visión progresiva y, en algunos casos, disfunción vestibular.","Spanish_Disease_Name__c":"síndrome de usher","Spanish_GARD_Synonym__c":"síndrome de retinosis pigmentaria-hipoacusia; síndrome de retinosis pigmentaria-sordera; ush","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":"Usher syndrome is a condition characterized by partial or total hearing loss and vision loss that worsens over time. The hearing loss is classified as sensorineural, which means that it is caused by abnormalities of the inner ear. The loss of vision is caused by an eye disease called retinitis pigmentosa (RP), which affects the layer of light-sensitive tissue at the back of the eye (the retina). Vision loss occurs as the light-sensing cells of the retina gradually break down. Loss of night vision begins first, followed by blind spots that develop in the side (peripheral) vision. Over time, these blind spots enlarge and merge to produce tunnel vision. In some cases, vision is further impaired by clouding of the lens of the eye (cataracts). However, many people with retinitis pigmentosa retain some central vision throughout their lives. Researchers have identified three major types of Usher syndrome, designated as types I, II, and III. These types are distinguished by the severity of hearing loss, the presence or absence of balance problems, and the age at which signs and symptoms appear. The types are further divided into subtypes based on their genetic cause. Most individuals with Usher syndrome type I are born with severe to profound hearing loss. Worsening vision loss caused by retinitis pigmentosa becomes apparent in childhood. This type of Usher syndrome also causes abnormalities of the vestibular system, which is the part of the inner ear that helps maintain the bodys balance and orientation in space. As a result of the vestibular abnormalities, children with the condition have trouble with balance. They begin sitting independently and walking later than usual, and they may have difficulty riding a bicycle and playing certain sports. Usher syndrome type II is characterized by hearing loss from birth and progressive vision loss that begins in adolescence or adulthood. The hearing loss associated with this form of Usher syndrome ranges from mild to severe and mainly affects the ability to hear high-frequency sounds. For example, it is difficult for affected individuals to hear high, soft speech sounds, such as those of the letters d and t. The degree of hearing loss varies within and among families with this condition, and it may become more severe over time. Unlike the other forms of Usher syndrome, type II is not associated with vestibular abnormalities that cause difficulties with balance. People with Usher syndrome type III experience hearing loss and vision loss beginning somewhat later in life. Unlike the other forms of Usher syndrome, type III is usually associated with normal hearing at birth. Hearing loss typically begins during late childhood or adolescence, after the development of speech, and becomes more severe over time. By middle age, most affected individuals have profound hearing loss. Vision loss caused by retinitis pigmentosa also develops in late childhood or adolescence. Some people with Usher syndrome type III develop vestibular abnormalities that cause problems with balance.","Curated_Disease_Description_Source__c":"GARD:0007843","GARD_Synonym__c":"retinitis pigmentosa-hearing loss syndrome; ush; usher syndromes; usher's syndrome","Name":"Usher syndrome","Curated_USA_Estimate__c":"50,000","estimateUsa":"50,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Hearing Health Foundation","Website__c":"https://hearinghealthfoundation.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":"Prevent Blindness America","Website__c":"https://preventblindness.org/"},{"Account_Name__c":"Foundation Fighting Blindness","Website__c":"https://www.fightingblindness.org/"},{"Account_Name__c":"Retina International","Website__c":"https://retina-international.org/"},{"Account_Name__c":"Usher Syndrome Coalition","Website__c":"https://www.usher-syndrome.org/"},{"Account_Name__c":"Usher 1F Collaborative","Website__c":"https://www.usher1f.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":"Ophthalmology","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Congenital Abnormality","Tag_Category__c":"Disease Category","category_description":"Birth defects are structural changes present at birth that can affect almost any part of the body, including how the body looks, works, or both.","curated_tag_name":"Birth defects"},{"Tag_Name__c":"Otolaryngology","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Retinal","Tag_Category__c":"Account;Specialist","curated_tag_name":"Retinal disorders"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:886"},{"Age_At_Onset__c":"Neonatal","Provided_By__c":"ORPHA:886"},{"Age_At_Onset__c":"Childhood","Provided_By__c":"ORPHA:886"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C0271097"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK1265","Source__c":"Gene Review","Xref__c":"NBK1265"},{"URL__c":"https://www.omim.org/phenotypicSeries/PS276900","Source__c":"MONDO:0019501","Xref__c":"OMIMPS:276900"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C052245","Source__c":"MONDO:0019501","Xref__c":"D052245"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0050439","Source__c":"MONDO:0019501","Xref__c":"DOID:0050439"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C85217","Source__c":"MONDO:0019501","Xref__c":"C85217"},{"URL__c":"https://www.orpha.net/en/disease/detail/886","Source__c":"CN469326; MONDO:0019501","Xref__c":"ORPHA:886"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0019501","Source__c":"GARD:0007843","Xref__c":"MONDO:0019501"},{"URL__c":"https://medlineplus.gov/ushersyndrome.html"},{"URL__c":"https://www.nei.nih.gov/learn-about-eye-health/eye-conditions-and-diseases/usher-syndrome"},{"URL__c":"https://www.nidcd.nih.gov/health/usher-syndrome"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=1876539","Source__c":"CN469326","Xref__c":"MEDGEN:1876539"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/CN469326","Source__c":"CN469326","Xref__c":"CN469326"}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Caries is a multifactorial bacterial infection affecting the structure of the tooth. This term has been used to describe the presence of more than expected dental caries.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000670","HPO_Synonym__c":"Caries; Cariosity of teeth; Dental caries; Dental cavities; Early dental caries; Frequent caries; Tooth cavities; Tooth decay","HPO_Name__c":"Carious teeth","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Decreased size of the teeth, which can be defined as a mesiodistal tooth diameter (width) more than 2 SD below mean. Alternatively, an apparently decreased maximum width of tooth.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000691","HPO_Synonym__c":"Decreased size of tooth; Decreased width of tooth; Small teeth; Small tooth; Tooth hypoplasia; Tooth hypotrophy; Underdeveloped tooth","HPO_Name__c":"Microdontia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Over-sensitivity to certain frequency ranges of sound.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010780","HPO_Name__c":"Hyperacusis","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001123","HPO_Synonym__c":"Partial loss of field of vision; Visual field defects","HPO_Name__c":"Visual field defect","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Any deviation from the normal pigmentation of the retina.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007703","HPO_Synonym__c":"Abnormality of retinal pigment epithelium; Abnormality of retinal pigmentation; Abnormality of RPE; Retinal pigmentary anomaly","HPO_Name__c":"Abnormal retinal pigmentation","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormal results of investigations using electromyography (EMG).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003457","HPO_Synonym__c":"Abnormal electromyography finding; Abnormal EMG; Electromyogram abnormal; EMG abnormalities","HPO_Name__c":"EMG abnormality","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Procedure_EMG"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A reduction of previously attained ability to see.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000529","HPO_Synonym__c":"Loss of visual acuity; Progressive loss of vision; Progressive vision loss; Progressive visual acuity loss; Progressive visual impairment; Slowly progressive visual loss; Vision loss, progressive; Visual loss, progressive","HPO_Name__c":"Progressive visual loss","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Loss of peripheral vision with retention of central vision, resulting in a constricted circular tunnel-like field of vision.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007994","HPO_Synonym__c":"Kalnienk vision; Loss of peripheral vision","HPO_Name__c":"Peripheral visual field loss","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Inability to see well at night or in poor light.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000662","HPO_Synonym__c":"Night blindness; Night-blindness; Poor night vision","HPO_Name__c":"Nyctalopia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A type of hearing impairment in one or both ears related to an abnormal functionality of the cochlear nerve.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000407","HPO_Synonym__c":"Hearing loss, sensorineural; Sensorineural deafness; Sensorineural hearing loss","HPO_Name__c":"Sensorineural hearing impairment","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Hypertrophic cardiomyopathy (HCM) is defined by the presence of increased ventricular wall thickness or mass in the absence of loading conditions (hypertension, valve disease) sufficient to cause the observed abnormality.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001639","HPO_Synonym__c":"Cardiomyopathy, hypertrophic; Enlarged and thickened heart muscle; HCM","HPO_Name__c":"Hypertrophic cardiomyopathy","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A developmental defect of tooth color.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011073","HPO_Synonym__c":"Abnormality of dental color; Abnormality of dental shade; Abnormality of tooth color; Abnormality of tooth shade","HPO_Name__c":"Abnormality of dental color","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Perceptions in a conscious and awake state that, in the absence of external stimuli, have qualities of real perception. These perceptions are vivid, substantial, and located in external objective space.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000738","HPO_Synonym__c":"Hallucination; Hallucinations; Sensory hallucination","HPO_Name__c":"Hallucinations","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality of the dental enamel.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000682","HPO_Synonym__c":"Abnormal tooth enamel; Abnormality of dental enamel; Enamel abnormalities; Enamel abnormality","HPO_Name__c":"Abnormal dental enamel morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A condition characterized by changes in personality and thought patterns, often accompanied by hallucinations and delusional beliefs, is known as psychosis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000709","HPO_Synonym__c":"Psychosis","HPO_Name__c":"Psychosis","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A type of motor delay characterized by a delay in acquiring the ability to control the large muscles of the body for walking, running, sitting, and crawling.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002194","HPO_Synonym__c":"Delayed attainment of gross motor milestones; Delayed attainment of gross motor skills; Delayed development of gross motor milestones; Delayed development of gross motor skills; Delayed gross motor milestones; Delayed gross motor skills; Delayed motor skills; Developmental delay, gross motor; Gross motor delay; Limited gross motor development; Limited gross motor skills","HPO_Name__c":"Delayed gross motor development","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A disorder of muscle unrelated to impairment of innervation or neuromuscular junction.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003198","HPO_Synonym__c":"Muscle tissue disease; Myopathic changes","HPO_Name__c":"Myopathy","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A failure to achieve the ability to walk at an appropriate developmental stage. Most children learn to walk in a series of stages, and learn to walk short distances independently between 12 and 15 months.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0031936","HPO_Synonym__c":"Delayed walking","HPO_Name__c":"Delayed ability to walk","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormal functionality of the cardiovascular system.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011025","HPO_Synonym__c":"Abnormality of cardiovascular system physiology","HPO_Name__c":"Abnormal cardiovascular system physiology","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Frequent (30-79%)","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:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Atrophy of the cortex of the cerebrum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002120","HPO_Synonym__c":"Cerebral cortex atrophy; Cortical atrophy; Decrease in size of the outer layer of the brain due to loss of brain cells","HPO_Name__c":"Cerebral cortical atrophy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of the functioning of the vestibular apparatus.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001751","HPO_Synonym__c":"Impaired vestibular function; Interictal vestibular dysfunction; Vestibular function defect","HPO_Name__c":"Abnormal vestibular function","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000639","HPO_Synonym__c":"Involuntary, rapid, rhythmic eye movements","HPO_Name__c":"Nystagmus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007360","HPO_Synonym__c":"Absent/small cerebellum; Absent/underdeveloped cerebellum; Atrophy/Degeneration affecting the cerebellum; Atrophy/Hypoplasia of the cerebellum; Cerebellar hypoplasia/atrophy","HPO_Name__c":"Aplasia/Hypoplasia of the cerebellum","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Visual impairment (or vision impairment) is vision loss (of a person) to such a degree as to qualify as an additional support need through a significant limitation of visual capability resulting from either disease, trauma, or congenital or degenerative conditions that cannot be corrected by conventional means, such as refractive correction, medication, or surgery.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000505","HPO_Synonym__c":"Impaired vision; Loss of eyesight; Poor vision; Visual impairment","HPO_Name__c":"Visual impairment","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A severe form of hypermetropia with over +5.00 diopters.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008499","HPO_Synonym__c":"High hyperopia; High-grade hypermetropia; Severe farsightedness; Severe long-sightedness","HPO_Name__c":"High hypermetropia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Vestibular areflexia can be measured as the absence of the caloric nystagmus response in electronystagmography.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008568","HPO_Name__c":"Vestibular areflexia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","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:886","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Any abnormality of the electrical responses of various cell types in the retina as measured by electroretinography.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000512","HPO_Synonym__c":"Abnormal electroretinography; Abnormal ERG; ERG abnormal","HPO_Name__c":"Abnormal electroretinogram","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","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:886","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A cataract is an opacity or clouding that develops in the crystalline lens of the eye or in its capsule.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000518","HPO_Synonym__c":"Cataracts; Clouding of the lens of the eye; Cloudy lens; Lens opacities; Lens opacity","HPO_Name__c":"Cataract","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Tinnitus is an auditory perception that can be described as the experience of sound, in the ear or in the head, in the absence of external acoustic stimulation.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000360","HPO_Synonym__c":"Ringing in ears; Ringing in the ears","HPO_Name__c":"Tinnitus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","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:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A type of refraction error associated with abnormal curvatures on the anterior and/or posterior surface of the cornea.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000483","HPO_Synonym__c":"Abnormal curving of the cornea or lens of the eye; Astigmatism","HPO_Name__c":"Astigmatism","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Frequently experiencing feelings of being down, miserable, and/or hopeless; struggling to recover from these moods; having a pessimistic outlook on the future; feeling a pervasive sense of shame; having a low self-worth; experiencing thoughts of suicide and engaging in suicidal behavior.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000716","HPO_Synonym__c":"Depression; Depressive episode; Depressivity","HPO_Name__c":"Depression","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Blindness is the condition of lacking visual perception defined as a profound reduction in visual perception. On the 6m visual acuity scale, blindness is defined as less than 3/60. On the 20ft visual acuity scale, blindness is defined as less than 20/400. On the decimal visual acuity scale, blindness is defined as less than 0.05. Blindness is typically characterized by a visual field of no greater than 10 degrees in radius around central fixation.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000618","HPO_Synonym__c":"Blindness; Total vision loss","HPO_Name__c":"Blindness","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:886","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Lack of physical coordination resulting in an abnormal tendency to drop items or bump into objects.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002312","HPO_Synonym__c":"Clumsiness","HPO_Name__c":"Clumsiness","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Congenital Abnormality"],"Specialist":["Genetics","Ophthalmology","Otolaryngology","Retinal","Pediatrics"],"Account":["Retinal"]},"synonyms":["retinitis pigmentosa-hearing loss syndrome"," ush"," usher syndromes"," usher's syndrome"],"spanishId":13248,"spanishName":"sindrome-de-usher"}