HealthSignal
Rare conditions starting with O
Every condition in the NIH Genetic and Rare Diseases Information Center has its own HealthSignal community page, with condition information, stories, research and Signals sign-up.
156 conditions starting with O
- Obesity due to congenital leptin deficiency
- Obesity due to pro-opiomelanocortin deficiency
- Obesity-colitis-hypothyroidism-cardiac hypertrophy-developmental delay syndrome
- Occipital pachygyria and polymicrogyria
- Occult macular dystrophy
- Occupational dystonia
- Ochoa syndrome
- Ocular albinism
- Ocular albinism with late-onset sensorineural deafness
- Ocular albinism, type I
- Ocular cicatricial pemphigoid
- Ocular melanoma
- Oculo-palato-cerebral syndrome
- Oculoauricular syndrome
- Oculoauriculofrontonasal syndrome
- Oculoauriculovertebral spectrum with radial defects
- Oculocerebral hypopigmentation syndrome of Preus
- Oculocerebrocutaneous syndrome
- Oculocerebrodental syndrome
- Oculocerebrofacial syndrome, Kaufman type
- Oculocutaneous albinism
- Oculocutaneous albinism type 1
- Oculocutaneous albinism type 1B
- Oculocutaneous albinism type 3
- Oculocutaneous albinism type 4
- Oculocutaneous albinism type 5
- Oculocutaneous albinism type 6
- Oculocutaneous albinism type 7
- Oculodental syndrome, Rutherfurd type
- Oculodentodigital dysplasia
- Oculofaciocardiodental syndrome
- Oculogastrointestinal muscular dystrophy
- Oculomaxillofacial dysostosis
- Oculomotor apraxia - Cogan type
- Oculoosteocutaneous syndrome
- Oculootodental syndrome
- Oculootoradial syndrome
- Oculopharyngeal muscular dystrophy
- Oculopharyngodistal myopathy
- Oculorenocerebellar syndrome
- Oculotrichoanal syndrome
- Oculotrichodysplasia
- Odonto-onycho dysplasia-alopecia syndrome
- Odonto-onycho-dermal dysplasia
- Odonto-tricho-ungual-digito-palmar syndrome
- Odontochondrodysplasia 1
- Odontoleukodystrophy
- Odontomatosis-aortae esophagus stenosis syndrome
- Odontomicronychial dysplasia
- Odontotrichomelic syndrome
- Ogden syndrome
- Oguchi disease
- Okur-Chung neurodevelopmental syndrome
- Oligoarticular juvenile idiopathic arthritis
- Oligoastrocytoma
- Oligocone trichromacy
- Oligodendroglioma
- Oligodontia-cancer predisposition syndrome
- Oligomeganephronia
- Oliver syndrome
- Olivopontocerebellar atrophy-deafness syndrome
- Olmsted syndrome
- Omodysplasia
- Omphalocele syndrome, Shprintzen-Goldberg type
- Omphalocele-diaphragmatic hernia-cardiovascular anomalies-radial ray defect syndrome
- Omphalomesenteric cyst
- Omsk hemorrhagic fever
- Onchocerciasis
- Onychocytic matricoma
- Onychotrichodysplasia and neutropenia
- Ophthalmic herpes zoster
- Ophthalmomandibulomelic dysplasia
- Ophthalmoplegia-intellectual disability-lingua scrotalis syndrome
- Opitz G/BBB syndrome
- Opsismodysplasia
- Opsoclonus-myoclonus syndrome
- Optic atrophy 2
- Optic atrophy 3
- Optic atrophy 5
- Optic atrophy 6
- Optic atrophy-ataxia-peripheral neuropathy-global developmental delay syndrome
- Optic pathway glioma
- Oral submucous fibrosis
- Orbital lymphoma
- Ornithine aminotransferase deficiency
- Ornithine carbamoyltransferase deficiency
- Ornithosis
- Orofacial-digital syndrome III
- Orofacial-digital syndrome IV
- Orofaciodigital syndrome
- Orofaciodigital syndrome 18
- Orofaciodigital syndrome I
- Orofaciodigital syndrome IX
- Orofaciodigital syndrome type 12
- Orofaciodigital syndrome type 14
- Orofaciodigital syndrome type 6
- Orofaciodigital syndrome V
- Orofaciodigital syndrome VIII
- Orofaciodigital syndrome X
- Orofaciodigital syndrome XI
- Oromandibular dystonia
- Oromandibular-limb hypogenesis spectrum
- Oromandibular-limb hypogenesis syndrome
- Oropharynx cancer
- Orthostatic hypotension 1
- Osebold-Remondini syndrome
- OSLAM syndrome
- Ossification anomalies-psychomotor developmental delay syndrome
- Ossifying fibroma
- Osteochondritis dissecans
- Osteochondritis of tarsal/metatarsal bone
- Osteochondrodysplatic nanism-deafness-retinitis pigmentosa syndrome
- Osteocraniostenosis
- Osteofibrous dysplasia
- Osteogenesis imperfecta
- Osteogenesis imperfecta type 5
- Osteogenesis imperfecta type 6
- Osteogenesis imperfecta type 7
- Osteogenesis imperfecta type 8
- Osteogenesis imperfecta type 9
- Osteogenesis imperfecta type I
- Osteogenesis imperfecta type III
- Osteogenesis imperfecta with normal sclerae, dominant form
- Osteogenesis imperfecta-retinopathy-seizures-intellectual disability syndrome
- Osteogenesis imperfecta, perinatal lethal
- Osteoglophonic dysplasia
- Osteomyelitis
- Osteopathia striata with cranial sclerosis
- Osteopathia striata-pigmentary dermopathy-white forelock syndrome
- Osteopenia-intellectual disability-sparse hair syndrome
- Osteopetrosis
- Osteopetrosis with renal tubular acidosis
- Osteoporosis with pseudoglioma
- Osteoporosis-macrocephaly-blindness-joint hyperlaxity syndrome
- Osteoporosis-oculocutaneous hypopigmentation syndrome
- Osteosclerosis - Stanescu type
- Osteosclerosis-developmental delay-craniosynostosis syndrome
- Osteosclerosis-ichthyosis-premature ovarian failure syndrome
- Osteosclerotic metaphyseal dysplasia
- Oto-palato-digital syndrome, type I
- Oto-palato-digital syndrome, type II
- Otodental syndrome
- Otofaciocervical syndrome
- Otoonychoperoneal syndrome
- Otopalatodigital syndrome
- Otospondylomegaepiphyseal dysplasia
- Otospondylomegaepiphyseal dysplasia, autosomal dominant
- Ovarian Brenner tumor
- Ovarian carcinosarcoma
- Ovarian germ cell tumor
- Ovarian gynandroblastoma
- Ovarian hyperstimulation syndrome
- Ovarian small cell carcinoma
- Overgrowth syndrome with 2q37 translocation
- Overhydrated hereditary stomatocytosis
- Oxoglutaricaciduria
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