This list of
rare diseases was originally taken from the
NIH public domain resource at
http://ord.aspensys.com/diseases.asp .
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
- O Doherty syndrome[?]
- O Donnell Pappas syndrome[?]
- Obesity
- Obesophobia[?]
- Obsessive-compulsive disorder
- Obstructive asymmetric septal hypertrophy[?]
- Occipital horn syndrome[?]
- Occlusive Infantile ateriopathy[?]
- Occult spinal dysraphism[?]
- Occupational Asthma - Chemicals[?]
- Occupational Asthma - Metals[?]
- Occupational Asthma - Plants[?]
- Occupational Asthma - Wood dust[?]
- Occupational Asthma-Drugs[?]
- OCD
- Ochoa syndrome[?]
- Ochronosis, hereditary[?]
- Ochronosis[?]
- Ocular Albinism[?]
- Ocular coloboma-imperforate anus[?]
- Ocular convergence spasm[?]
- Ocular Histoplasmosis[?]
- Ocular melanoma[?]
- Ocular motility disorders[?]
- Ocular toxoplasmosis[?]
- Oculo cerebral dysplasia[?]
- Oculo cerebro acral syndrome[?]
- Oculo cerebro osseous syndrome[?]
- Oculo dento digital dysplasia[?]
- Oculo digital syndrome[?]
- Oculo facio cardio dental syndrome[?]
- Oculo skeletal renal syndrome[?]
- Oculo tricho anal syndrome[?]
- Oculo tricho dysplasia[?]
- Oculoauriculofrontonasal syndrome[?]
- Oculoauriculovertebral dysplasia[?]
- Oculocerebral hypopigmentation syndrome Cross type[?]
- Oculocerebral hypopigmentation syndrome type Preus[?]
- Oculocerebral syndrome with hypopigmentation[?]
- Oculocerebrocutaneous syndrome[?]
- Oculocerebrorenal syndrome[?]
- Oculocutaneous albinism immunodeficiency[?]
- Oculocutaneous albinism type 1[?]
- Oculocutaneous albinism type 2[?]
- Oculocutaneous albinism type 3[?]
- Oculocutaneous albinism, tyrosinase negative[?]
- Oculocutaneous albinism, tyrosinase positive[?]
- Oculocutaneous tyrosinemia[?]
- Oculodental syndrome Rutherfurd syndrome[?]
- Oculodentodigital dysplasia dominant[?]
- Oculodentodigital syndrome[?]
- Oculo-dento-digital syndrome[?]
- Oculodentoosseous dysplasia dominant[?]
- Oculodentoosseous dysplasia recessive[?]
- Oculodigitoesophagoduodenal syndrome[?]
- Oculo-gastrointestinal muscular dystrophy[?]
- Oculomaxillofacial dysostosis[?]
- Oculomaxillofacial dysplasia with oblique facial clefts[?]
- Oculomelic amyoplasia[?]
- Oculopalatoskeletal syndrome[?]
- Oculopharnygeal muscular dystrophy[?]
- Oculorenocerebellar syndrome[?]
- Odonto onycho dysplasia with alopecia[?]
- Odontoma[?]
- Odontomicronychial dysplasia[?]
- Odontoonychodermal dysplasia[?]
- Odontophobia[?]
- Odontotrichomelic hypohidrotic dysplasia[?]
- Odynophobia[?]
- OFD syndrome type 8[?]
- OFD syndrome type Figuera[?]
- Ogilvie's syndrome[?]
- Ohaha syndrome[?]
- Ohdo Madokoro Sonoda syndrome[?]
- Oikophobia[?]
- Okamuto Satomura syndrome[?]
- Olfactophobia[?]
- Oligodactyly tetramelic postaxial[?]
- Oligomeganephronic renal hypoplasia[?]
- Oligomeganephrony[?]
- Oligophernia[?]
- Oliver McFarlane syndrome[?]
- Oliver syndrome[?]
- Olivopontocerebellar atrophy deafness[?]
- Olivopontocerebellar atrophy type 1[?]
- Olivopontocerebellar atrophy type 2[?]
- Olivopontocerebellar atrophy type 3[?]
- Olivopontocerebellar atrophy[?]
- Ollier disease[?]
- Olmsted syndrome[?]
- Ombrophobia[?]
- Omenn syndrome[?]
- Omodysplasia type 1[?]
- Omphalocele cleft palate syndrome lethal[?]
- Omphalocele exstrophy imperforate anus[?]
- Omphalomesenteric cyst[?]
- Omsk hemorrhagic fever[?]
- Onat syndrome[?]
- Onchocerciasis[?]
- Oncocytoma[?]
- Ondine's curse[?]
- Oneirophobia[?]
- Onychonychia hypoplastic distal phalanges[?]
- Onychotrichodysplasia and neutropenia[?]
- Ophthalmophobia[?]
- Opitz Mollica Sorge syndrome[?]
- Opitz Reynolds Fitzgerald syndrome[?]
- Opitz syndrome[?]
- Opportunistic infections[?]
- Oppositional defiant disorder[?]
- Opsismodysplasia[?]
- Opthalmic icthyosis[?]
- Opthalmo acromelic syndrome[?]
- Opthalmomandibulomelic dysplasia[?]
- Opthalmoplegia ataxia hypoacusis[?]
- Opthalmoplegia mental retardation lingua scrotalis[?]
- Opthalmoplegia myalgia tubular aggregates[?]
- Opthalmoplegia progressive external scoliosis[?]
- Optic atrophy opthalmoplegia ptosis deafness myopia[?]
- Optic atrophy polyneuropathy deafness[?]
- Optic atrophy, autosomal dominant[?]
- Optic atrophy, idiopathic, autosomal recessive[?]
- Optic atrophy[?]
- Optic nerve coloboma with renal disease[?]
- Optic nerve disorder[?]
- Optic nerve hypoplasia, familial bilateral[?]
- Optic neuritis
- Optic pathway glioma[?]
- Opticoacoustic nerve atrophy dementia[?]
- Oral facial digital syndrome type 3[?]
- Oral facial digital syndrome type 4[?]
- Oral facial digital syndrome[?]
- Oral facial dyskinesia[?]
- Oral leukoplakia[?]
- Oral lichen planus[?]
- Oral lichenoid lesions[?]
- Oral squamous cell carcinoma[?]
- Oral submucous fibrosis[?]
- Oral-facial cleft[?]
- Oral-facial-digital syndrome, type IV[?]
- Oral-facial-digital syndrome[?]
- Oral-pharyngeal disorders[?]
- Organic brain syndrome[?]
- Organic mood syndrome[?]
- Organic personality syndrome[?]
- Ornithine aminotransferase deficiency[?]
- Ornithine carbamoyl phosphate deficiency[?]
- Ornithine transcarbamylase deficiency, hyperammonemia due to[?]
- Ornithinemia[?]
- Oro acral syndrome[?]
- Orofaciodigital syndrome Gabrielli type[?]
- Orofaciodigital syndrome Shashi type[?]
- Orofaciodigital syndrome Thurston type[?]
- Orofaciodigital syndrome type 2[?]
- Orofaciodigital syndrome type1[?]
- Orotic aciduria hereditary[?]
- Orotic aciduria purines-pyrimidines[?]
- Orotidylic decarboxylase deficiency[?]
- Orstavik Lindemann Solberg syndrome[?]
- Orthostatic intolerance[?]
- Osebold Remondini syndrome[?]
- Oslam syndrome[?]
- Osmed Syndrome[?]
- Ossicular Malformations, familial[?]
- Osteitis deformans[?]
- Osteoarthritis[?]
- Osteoarthropathy of fingers familial[?]
- Osteochondritis deformans juvenile[?]
- Osteochondritis dissecans[?]
- Osteochondritis[?]
- Osteochondrodysplasia thrombocytopenia hydrocephalus[?]
- Osteochondroma[?]
- Osteocraniostenosis[?]
- Osteodysplasia familial Anderson type[?]
- Osteodysplastic dwarfism Corsello type[?]
- Osteoectasia familial[?]
- Osteogenesis imperfecta congenita microcephaly and cataracts[?]
- Osteogenesis imperfecta congenital joint contractures[?]
- Osteogenesis imperfecta retinopathy[?]
- Osteogenic sarcoma[?]
- Osteoglophonic dwarfism[?]
- Osteolysis hereditary multicentric[?]
- Osteolysis syndrome recessive[?]
- Osteomalacia[?]
- osteomyelitis[?]
- Osteonecrosis[?]
- Osteopathia condensans disseminata with osteopoikilosis[?]
- Osteopathia striata cranial sclerosis[?]
- Osteopathia striata pigmentary dermopathy white forelock[?]
- Osteopetrosis autosomal dominant type 1[?]
- Osteopetrosis lethal[?]
- Osteopetrosis renal tubular acidosis[?]
- Osteopetrosis, (generic term)[?]
- Osteopetrosis, malignant[?]
- Osteopetrosis, mild autosomal recessive form[?]
- Osteopoikilosis[?]
- Osteoporosis macrocephaly mental retardation blindness[?]
- Osteoporosis oculocutaneous hypopigmentation syndrome[?]
- Osteoporosis pseudoglioma syndrome[?]
- osteoporosis
- Osteosarcoma limb anomalies erythroid macrocytosis[?]
- Osteosclerose type Stanescu[?]
- Osteosclerosis abnormalities of nervous system and meninges[?]
- Osteosclerosis autosomal dominant Worth type[?]
- Osteosclerosis[?]
- Ostertag type amyloidosis[?]
- Ota Kawamura Ito syndrome[?]
- Oto palato digital syndrome type I and II[?]
- Otodental dysplasia[?]
- Otofaciocervical syndrome[?]
- Otoonychoperoneal syndrome[?]
- Oto-Palatal-digital syndrome[?]
- Otopalatodigital syndrome type 2[?]
- Otosclerosis, familial[?]
- otosclerosis
- Otospondylomegaepiphyseal dysplasia[?]
- Ouvrier Billson syndrome[?]
- Ovarian cancer[?]
- Ovarian carcinosarcoma[?]
- Ovarian dwarfism as part of Turner Syndrome[?]
- Ovarian dwarfism[?]
- Ovarian insufficiency due to FSH resistance[?]
- ovarian remnant syndrome[?]
- Overfolded helix[?]
- Overgrowth radial ray defect arthrogryposis[?]
- Overgrowth syndrome type Fryer[?]
- Overhydrated hereditary stomatocytosis[?]
- Oxalosis[?]