List of diseases (O)

This is a list of diseases starting with the letter "O".

O–Ob O'Donnell-Pappas syndrome Obesophobia (pocrescophobia) Obsessive–compulsive disorder (OCD) Obsessive–compulsive personality disorder Obstructive sleep apnea

Oc

Occ–Och Occipital horn syndrome Occult spinal dysraphism Occupational asthma Ochoa syndrome (Urofacial syndrome) Ochronosis Ockelbo disease (Pogosta disease, Karelian fever, Sindbis fever)

Ocu

Ocular albinism Ocular histoplasmosis Ocular melanoma Ocular motility disorders Ocular toxoplasmosis Oculoauriculofrontonasal syndrome Oculo-auriculo-vertebral spectrum (Goldenhar syndrome) Oculocerebral hypopigmentation syndrome Cross type Oculocerebral hypopigmentation syndrome (Preus type) Oculocerebral syndrome with hypopigmentation (Cross syndrome) Oculo-cerebro-acral syndrome Oculocerebrocutaneous syndrome (Delleman-Oorthuys syndrome) Oculocerebrorenal syndrome of Lowe Oculocutaneous albinism Type I Type II Type III Type IV Oculocutaneous tyrosinemia (Tyrosinemia Type II) Oculodentodigital dysplasia Oculodigitoesophagoduodenal syndrome (Feingold syndrome) Oculofaciocardiodental syndrome Oculogastrointestinal muscular dystrophy Oculomaxillofacial dysostosis Oculomaxillofacial dysplasia Oculomotor nerve palsy Oculopalatoskeletal syndrome (Michels syndrome) Oculopharyngeal muscular dystrophy

Od–Ok Odonto-onycho-dermal dysplasia Odontoma Odonto-onycho-dermal dysplasia Odontophobia Odontotrichomelic hypohidrotic dysplasia OEIS complex (omphalocele-exstrophy-imperforate anus-spinal defects) Ogilvie's syndrome OHANA syndrome Ohdo syndrome Ohtahara syndrome Okamoto syndrome

Ol Oligodactyly Oligomeganephronia Oliver–McFarlane syndrome Olivopontocerebellar atrophy (symptom of Multiple system atrophy) Ollier disease Olmsted syndrome

Om–On Omenn syndrome Omodysplasia Type 1 (autosomal recessive) Type 2 (autosomal dominant) Omsk hemorrhagic fever Onat syndrome Onchocerciasis (River blindness) Oncocytoma Ondine's curse (Failure of automatic ventilation; central hypoventilation syndrome; sleep apnea) Onychocryptosis (Ingrown toenail) Onychogryphosis Onycholysis Onychomadesis Onychomatricoma Onychomycosis Onychophosis

Op

Opi-Ops Opioid-induced hyperalgesia Opioid use disorder Ophthalmo-acromelic syndrome of Waardenburg Ophthalmomandibulomelic dysplasia Opitz-Frias syndrome (G syndrome) Opitz–Mollica–Sorge syndrome Opitz–Reynolds–Fitzgerald syndrome Opportunistic infections Oppositional defiant disorder Opsismodysplasia

Opt Optic disc drusen Optic nerve disorders Optic nerve glioma Optic nerve hypoplasia Optic disc coloboma Optic neuritis Optic neuropathy

Or

Ora–Orn Oral-facial cleft Oral-facial-digital syndromes Oral facial digital syndrome type 1 (Papillon-Leage-Psaume Syndrome) Oral facial digital syndrome type 2 (Mohr syndrome) Oral facial digital syndrome type 3 (Sugarman syndrome) Oral facial digital syndrome type 4 (Mohr-Majewski syndrome, Baraitser-Burn syndrome) Oral facial digital syndrome type 5 (Thurston syndrome) Oral facial digital syndrome type 6 (Varadi–Papp syndrome) Oral facial digital syndrome type 7 (Whelan syndrome) Oral facial digital syndrome type 8 (Edwards syndrome) Oral facial digital syndrome type 9 (Gurrieri syndrome) Oral facial digital syndrome type 10 (Figuera syndrome) Oral facial digital syndrome type 11 (Gabrielli syndrome) Oral facial digital syndrome type 12 (Moran-Barroso syndrome) Oral facial digital syndrome type 13 (Degner syndrome) Oral leukoplakia Oral submucous fibrosis Organic brain syndromes Organic personality disorder Organophosphate poisoning Ornithine aminotransferase deficiency Ornithine transcarbamylase deficiency Ornithosis (Psittacosis, Avian Chlamydiosis)

Oro–Ort Oroacral syndrome (Verloes-Koulischer-Oro-Acral syndrome) Orofacial digital syndrome (OFDs) Oropharyngeal dysphagia Orotic aciduria Ostravik–Lindemann–Solberg syndrome Orthostatic intolerance

Os

Ose–Oss Osebold–Remondini syndrome Osgood–Schlatter disease

Ost Osteitis deformans (Paget's disease of bone) Osteoarthritis Osteoarthropathy Osteoarthrosis Osteochondritis dissecans Osteochondrodysplasia Osteochondroma Osteocraniostenosis Osteodysplasia Anderson type Sclerotic osteodysplasia Osteodysplastic primordial dwarfism Osteoectasia (Juvenile Paget's disease) Osteogenesis imperfecta Osteoglophonic dysplasia (Osteoglophonic dwarfism) Osteolysis Osteomalacia Osteomyelitis Osteonecrosis Osteopathia condensans disseminata Osteopathia striata Osteopathia striata with cranial sclerosis Osteopathia striata with hyperpigmented dermopathy Osteopetrosis Osteopoikilosis Osteoporosis Osteosarcoma Osteosarcoma limb anomalies erythroid macrocytosis (OSLAM syndrome) Osteosclerosis Worth syndrome (Mandibular osteosclerosis, autosomal dominant osteosclerosis) Van Buchem disease Ostertag type, familial amyloidosis

Ot–Ox Otopalatodigital syndromes Type I Type II Frontometaphyseal dysplasia Melnick–Needles syndrome Otodental syndrome Otofaciocervical syndrome Oto-onycho-peroneal syndrome Oto-palato-digital syndrome Otosclerosis Oto-spondylo-megaepiphyseal dysplasia (OSMED) Ouvrier–Billson syndrome (Paroxysmal tonic upgaze of childhood) Ovarian cancer Ovarian carcinosarcoma Ovarian remnant syndrome Overgrowth syndromes Beckwith–Wiedemann syndrome Simpson–Golabi–Behmel syndrome Sotos syndrome Weaver syndrome Overwhelming post-splenectomy infection (OPSI) Oxalosis (Hyperoxaluria)

References