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Genetic Conditions: O
URL of this page: https://medlineplus.gov/genetics/condition-o/

Genetic Conditions: O

Explore the signs and symptoms, genetic cause, and inheritance pattern of various health conditions.

Other genetic conditions A-Z
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  • OA, see Ocular albinism
  • OA, see Osteoarthritis
  • OAS, see Ophthalmo-acromelic syndrome
  • OAT deficiency, see Gyrate atrophy of the choroid and retina
  • OAV complex, see Craniofacial microsomia
  • OAVS, see Craniofacial microsomia
  • Oberklaid-Danks syndrome, see Bohring-Opitz syndrome
  • Obesity due to congenital leptin deficiency, see Congenital leptin deficiency
  • Obesity due to leptin receptor gene deficiency, see Leptin receptor deficiency
  • Obesity, early-onset, adrenal insufficiency, and red hair, see Proopiomelanocortin deficiency
  • Obesity, morbid, due to leptin deficiency, see Congenital leptin deficiency
  • Obesity, morbid, due to leptin receptor deficiency, see Leptin receptor deficiency
  • Obesity, morbid, nonsyndromic 1, see Congenital leptin deficiency
  • Obesity, morbid, nonsyndromic 2, see Leptin receptor deficiency
  • Obesity, severe, due to leptin deficiency, see Congenital leptin deficiency
  • Obesity-hypotonia syndrome, see Cohen syndrome
  • Obsessive-compulsive disorder
  • Obsessive-compulsive neurosis, see Obsessive-compulsive disorder
  • Obstetric cholestasis, see Intrahepatic cholestasis of pregnancy
  • Obstructive apnea, see Obstructive sleep apnea
  • Obstructive disease of the pulmonary veins, see Pulmonary veno-occlusive disease
  • Obstructive sleep apnea
  • Obstructive sleep apnea syndrome, see Obstructive sleep apnea
  • OCA, see Oculocutaneous albinism
  • Occlusive infantile arteriopathy, see Generalized arterial calcification of infancy
  • Occupational cramp, see Task-specific focal dystonia
  • Occupational dystonia, see Task-specific focal dystonia
  • OCD, see Obsessive-compulsive disorder
  • OCD, see Familial osteochondritis dissecans
  • Ochoa syndrome
  • Ocular albinism
  • Ocular coloboma, see Coloboma
  • Ocular retraction syndrome, see Isolated Duane retraction syndrome
  • Ocular rosacea, see Rosacea
  • Oculo-dento-digital dysplasia, see Oculodentodigital dysplasia
  • Oculo-digito-esophagoduodental (ODED) syndrome, see Feingold syndrome
  • Oculo-facio-cardio-dental syndrome, see Oculofaciocardiodental syndrome
  • Oculo-oto-facial dysplasia, see Burn-McKeown syndrome
  • Oculo-skeletal-abdominal syndrome, see 3MC syndrome
  • Oculoauriculovertebral spectrum, see Craniofacial microsomia
  • Oculocerebrofacial syndrome, Kaufman type, see Kaufman oculocerebrofacial syndrome
  • Oculocerebrorenal syndrome, see Lowe syndrome
  • Oculocerebrorenal syndrome of Lowe, see Lowe syndrome
  • Oculocutaneous albinism
  • Oculocutaneous albinism with leukocyte defect, see Chediak-Higashi syndrome
  • Oculodentodigital dysplasia
  • Oculodentodigital dysplasia, autosomal recessive, see Oculodentodigital dysplasia
  • Oculodentodigital syndrome, see Oculodentodigital dysplasia
  • Oculodentodigitalis dysplasia, see Oculodentodigital dysplasia
  • Oculodentoosseous dysplasia, see Oculodentodigital dysplasia
  • Oculofaciocardiodental syndrome
  • Oculogastrointestinal muscular dystrophy, see Mitochondrial neurogastrointestinal encephalopathy disease
  • Oculootofacial dysplasia, see Burn-McKeown syndrome
  • Oculopalatoskeletal syndrome, see 3MC syndrome
  • Oculopharyngeal dystrophy, see Oculopharyngeal muscular dystrophy
  • Oculopharyngeal muscular dystrophy
  • Oculosympathetic palsy, see Horner syndrome
  • OD, see Familial osteochondritis dissecans
  • ODD syndrome, see Oculodentodigital dysplasia
  • ODDD, see Oculodentodigital dysplasia
  • ODDD syndrome, see Oculodentodigital dysplasia
  • ODDD, autosomal recessive, see Oculodentodigital dysplasia
  • ODOD , see Oculodentodigital dysplasia
  • ODOD syndrome, see Oculodentodigital dysplasia
  • ODOD, autosomal recessive, see Oculodentodigital dysplasia
  • Odontoleukodystrophy, see Pol III-related leukodystrophy
  • Oestrogen synthetase deficiency, see Aromatase deficiency
  • OFCD syndrome, see Oculofaciocardiodental syndrome
  • OFDS, see Oral-facial-digital syndrome
  • OGD, see Osteoglophonic dysplasia
  • OGIMD, see Mitochondrial neurogastrointestinal encephalopathy disease
  • Ohaha syndrome, see Infantile-onset spinocerebellar ataxia
  • Ohdo syndrome, Maat-Kievit-Brunner type
  • Ohdo syndrome, MKB type, see Ohdo syndrome, Maat-Kievit-Brunner type
  • Ohdo syndrome, Say-Barber-Biesecker variant, see Ohdo syndrome, Say-Barber-Biesecker-Young-Simpson variant
  • Ohdo syndrome, Say-Barber-Biesecker-Young-Simpson variant
  • Ohdo syndrome, SBBYS variant, see Ohdo syndrome, Say-Barber-Biesecker-Young-Simpson variant
  • OI, see Osteogenesis imperfecta
  • Okamoto syndrome, see Au-Kline syndrome
  • Okihiro syndrome, see Duane-radial ray syndrome
  • OKS, see FG syndrome
  • OKT deficiency, see Gyrate atrophy of the choroid and retina
  • Old Silk Route disease, see Behçet disease
  • Old-aged sensorineural hearing impairment, see Age-related hearing loss
  • Oligophrenia microphthalmus, see Norrie disease
  • Olivopontocerebellar atrophy I, see Spinocerebellar ataxia type 1
  • Ollier disease
  • Ollier's syndrome, see Ollier disease
  • Omenn syndrome
  • Omenn's syndrome, see Omenn syndrome
  • Omphalocele, see Abdominal wall defect
  • ONCR, see Renal coloboma syndrome
  • Ondine syndrome, see Congenital central hypoventilation syndrome
  • Ondine-Hirschsprung disease, see Congenital central hypoventilation syndrome
  • Onychauxis, hyponychia, and onycholysis, see Nonsyndromic congenital nail disorder 10
  • OOFD, see Burn-McKeown syndrome
  • OPA3, see Autosomal dominant optic atrophy and cataract
  • OPA3 defect, see Costeff syndrome
  • OPA3, autosomal dominant, see Autosomal dominant optic atrophy and cataract
  • OPCA, see Multiple system atrophy
  • OPCH, see Pontocerebellar hypoplasia
  • OPD syndrome, type 1, see Otopalatodigital syndrome type 1
  • OPD syndrome, type 2, see Otopalatodigital syndrome type 2
  • Open spine, see Spina bifida
  • Ophthalmo-acromelic syndrome
  • Ophthalmoacromelic syndrome, see Ophthalmo-acromelic syndrome
  • Ophthalmoplegia, hypotonia, ataxia, hypacusis, and athetosis, see Infantile-onset spinocerebellar ataxia
  • Opiate addiction, see Opioid addiction
  • Opiate dependence, see Opioid addiction
  • Opioid addiction
  • Opioid dependence, see Opioid addiction
  • Opitz BBB syndrome, see Opitz G/BBB syndrome
  • Opitz BBB/G syndrome, see Opitz G/BBB syndrome
  • Opitz G syndrome, see Opitz G/BBB syndrome
  • Opitz G/BBB syndrome
  • Opitz syndrome, see Opitz G/BBB syndrome
  • Opitz trigonocephaly-like syndrome, see Bohring-Opitz syndrome
  • Opitz-Frias syndrome, see Opitz G/BBB syndrome
  • Opitz-Kaveggia syndrome, see FG syndrome
  • OPMD, see Oculopharyngeal muscular dystrophy
  • Oppenheim dystonia, see Early-onset isolated dystonia
  • Oppenheim's dystonia, see Early-onset isolated dystonia
  • OPPG, see Osteoporosis-pseudoglioma syndrome
  • Optic atrophy and cataract, autosomal dominant, see Autosomal dominant optic atrophy and cataract
  • Optic atrophy plus syndrome, see Costeff syndrome
  • Optic atrophy type 1
  • Optic atrophy type 3, see Autosomal dominant optic atrophy and cataract
  • Optic atrophy, autosomal dominant, see Optic atrophy type 1
  • Optic atrophy, cataract, and neurologic disorder, see Autosomal dominant optic atrophy and cataract
  • Optic atrophy, hereditary, autosomal dominant, see Optic atrophy type 1
  • Optic atrophy, juvenile, see Optic atrophy type 1
  • Optic atrophy, Kjer type, see Optic atrophy type 1
  • Optic coloboma, vesicoureteral reflux, and renal anomalies, see Renal coloboma syndrome
  • Optic nerve coloboma renal syndrome, see Renal coloboma syndrome
  • Optic-spinal MS, see Neuromyelitis optica
  • Opticoacoustic nerve atrophy with dementia, see Deafness-dystonia-optic neuronopathy syndrome
  • Opticospinal MS, see Neuromyelitis optica
  • Oral-facial-digital syndrome
  • Oral-mandibular-auricular syndrome, see Craniofacial microsomia
  • ORAS, see Otulipenia
  • Ormond disease, see Retroperitoneal fibrosis
  • Ormond's disease, see Retroperitoneal fibrosis
  • Ornithine aminotransferase deficiency, see Gyrate atrophy of the choroid and retina
  • Ornithine Carbamoyltransferase Deficiency Disease, see Ornithine transcarbamylase deficiency
  • Ornithine keto acid aminotransferase deficiency, see Gyrate atrophy of the choroid and retina
  • Ornithine transcarbamylase deficiency
  • Ornithine translocase deficiency
  • Ornithine-delta-aminotransferase deficiency, see Gyrate atrophy of the choroid and retina
  • Ornithinemia with gyrate atrophy, see Gyrate atrophy of the choroid and retina
  • Oro-facio-digital syndrome, see Oral-facial-digital syndrome
  • Orodigitofacial dysostosis, see Oral-facial-digital syndrome
  • Orodigitofacial syndrome, see Oral-facial-digital syndrome
  • Orofaciodigital syndrome, see Oral-facial-digital syndrome
  • Orthostatic hypotension
  • OSA, see Obstructive sleep apnea
  • OSA syndrome, see 3MC syndrome
  • OSAHS, see Obstructive sleep apnea
  • OSAS, see Obstructive sleep apnea
  • Osler-Vaquez disease, see Polycythemia vera
  • Osler-Weber-Rendu syndrome, see Hereditary hemorrhagic telangiectasia
  • OSMED, see Otospondylomegaepiphyseal dysplasia
  • Osseous Paget's disease, see Paget disease of bone
  • Osseous-oculo-dental dysplasia, see Oculodentodigital dysplasia
  • Osteitis deformans, see Paget disease of bone
  • Osteitis fibrosa disseminata, see McCune-Albright syndrome
  • Osteoarthritis
  • Osteoarthritis deformans, see Osteoarthritis
  • Osteoarthrosis, see Osteoarthritis
  • Osteochalasia desmalis familiaris, see Juvenile Paget disease
  • Osteochondritis dissecans, short stature, and early-onset osteoarthritis, see Familial osteochondritis dissecans
  • Osteochondrosis of the capital femoral epiphysis, see Legg-Calvé-Perthes disease
  • Osteodermia, see Progressive osseous heteroplasia
  • Osteodysplastic primordial dwarfism type II, see Microcephalic osteodysplastic primordial dwarfism type II
  • Osteodysplasty of Melnick and Needles, see Melnick-Needles syndrome
  • Osteoectasia with hyperphosphatasia, see Juvenile Paget disease
  • Osteogenesis imperfecta
  • Osteogenesis imperfecta with unusual skeletal lesions, see Gnathodiaphyseal dysplasia
  • Osteogenesis imperfecta, Levin type, see Gnathodiaphyseal dysplasia
  • Osteogenesis imperfecta, ocular form, see Osteoporosis-pseudoglioma syndrome
  • Osteoglophonic dwarfism, see Osteoglophonic dysplasia
  • Osteoglophonic dysplasia
  • Osteoma cutis, see Progressive osseous heteroplasia
  • Osteopathia condensans disseminata, see Buschke-Ollendorff syndrome
  • Osteopetroses, see Osteopetrosis
  • Osteopetrosis
  • Osteoporosis-pseudoglioma syndrome
  • Osteosis cutis, see Progressive osseous heteroplasia
  • Osterreicher syndrome, see Nail-patella syndrome
  • Oto-palato-digital syndrome, type I, see Otopalatodigital syndrome type 1
  • Oto-palato-digital syndrome, type II, see Otopalatodigital syndrome type 2
  • Oto-spondylo-megaepiphyseal dysplasia, see Otospondylomegaepiphyseal dysplasia
  • Otogenic vertigo, see Ménière disease
  • Otomandibular dysostosis, see Craniofacial microsomia
  • Otopalatodigital syndrome type 1
  • Otopalatodigital syndrome type 2
  • Otospondylomegaepiphyseal dysplasia
  • Otospondylomegaepiphyseal dysplasia, autosomal dominant, see Weissenbacher-Zweymüller syndrome
  • OTULIN-related autoinflammatory syndrome, see Otulipenia
  • Otulipenia
  • Ovarian cancer
  • Ovarian carcinoma, see Ovarian cancer
  • Ovarian dysgenesis with sensorineural deafness, see Perrault syndrome
  • Owren disease, see Factor V deficiency
  • Owren's disease, see Factor V deficiency
  • Oxalosis, see Primary hyperoxaluria
  • Oxaluria, primary, see Primary hyperoxaluria
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