List of diseases (O)

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

O–Ob[]

• O Donnell Pappas syndrome
• Obesophobia
• Obsessive–compulsive disorder (OCD)
• Obsessive–compulsive personality disorder
• Obstructive sleep apnea

Oc[]

Occ–Och Ocu

Occ–Och[]

• Occipital horn syndrome
• Occupational asthma
• Occupational asthma - animals, insects and fungi
• Occupational asthma - chemicals and materials
• Occupational asthma - drugs and enzymes
• Occupational asthma - grains, flours, plants and gums
• Occupational asthma - isocyanates and metals
• Occupational asthma - wood
• OCD
• Ochoa syndrome
• Ochronosis
• Ockelbo disease

Ocu[]

Ocul[]

Ocula[]

• Ocular albinism
• Ocular histoplasmosis
• Ocular melanoma
• Ocular motility disorders
• Ocular toxoplasmosis

Oculo[]

• Oculo-auriculo-vertebral spectrum
• Oculo dento digital dysplasia
• Oculo facio cardio dental syndrome

Oculoa–Oculog[]

• Oculoauriculofrontonasal syndrome
• Oculo-auriculo-vertebral dysplasia
• Oculocerebrocutaneous syndrome
• Oculocerebrorenal syndrome
• Oculocutaneous albinism type 1
• Oculocutaneous albinism type 2
• Oculocutaneous albinism type 3
• Oculocutaneous albinism, tyrosinase positive
• Oculocutaneous tyrosinemia
• Oculodentodigital dysplasia dominant
• Oculodentodigital syndrome
• Oculo-dento-digital syndrome

Oculom–Oculor[]

• Oculomelic amyoplasia
• Oculomotor nerve palsy
• Oculopharyngeal muscular dystrophy

Od–Ok[]

• Odontoma
• Odontophobia
• Ogilvie's syndrome
• Oikophobia

Ol[]

• Olfactophobia
• Oligodactyly
• Oligophernia
• Oliver–McFarlane syndrome
• Olivopontocerebellar atrophy
• Ollier disease
• Olmsted syndrome
• Olney's lesions

Om–On[]

• Omenn syndrome
• Omodysplasia type 2
• Omsk hemorrhagic fever
• Onchocerciasis
• Oncocytoma
• Ondine's curse
• Oneirophobia
• Onychocryptosis
• Onychogryphosis
• Onycholysis
• Onychomadesis
• Onychomatricoma
• Onychomycosis
• Onychophosis

Op[]

Opi–Ops Opt

Opi-Ops[]

• Opioid dependence
• Opioid-induced hyperalgesia
• Ophthalmophobia
• Opitz syndrome
• Opportunistic infections
• Oppositional defiant disorder
• Opsismodysplasia

Opt[]

• Optic atrophy, autosomal dominant
• Optic atrophy
• Optic disc drusen
• Optic nerve hypoplasia, familial bilateral
• Optic neuritis

Or[]

Ora–Orn Oro–Ort

Ora–Orn[]

• Oral facial digital syndrome type 3
• Oral facial digital syndrome
• Oral leukoplakia
• Oral lichen planus
• Oral lichenoid lesions
• Oral squamous cell carcinoma
• Oral submucous fibrosis
• Oral-facial-digital syndrome
• Organic brain syndrome
• Organophosphate poisoning
• Ornithine aminotransferase deficiency
• Ornithosis

Oro–Ort[]

• Orofaciodigital syndrome type1
• Orotic aciduria hereditary
• Orotic aciduria purines-pyrimidines
• Orthostatic intolerance

Os[]

Ose–Oss Ost

Ose–Oss[]

• Osebold–Remondini syndrome
• Osgood–Schlatter disease
• OSLAM syndrome
• Osmed syndrome

Ost[]

Oste[]

Ostei[]

• Osteitis deformans

Osteo[]

osteo: bone

Osteoa–Osteom[]

• Osteoarthritis
• Osteochondritis dissecans
• Osteochondritis
• Osteochondroma
• Osteogenesis Imperfecta
• Osteogenic sarcoma
• Osteoglophonic dwarfism
• Osteomalacia
• Osteomyelitis

osteocytes

Osteon–Osteos[]

• Osteonecrosis
• Osteopetrosis, (generic term)
• Osteopoikilosis
• Osteoporosis
• Osteosclerosis
• Osteocytes

Oster[]

Ot–Ox[]

• Oto-palato-digital syndrome type I and II
• Otodental syndrome
• Otosclerosis, familial
• Otosclerosis
• Otospondylomegaepiphyseal dysplasia
• Ovarian cancer
• ovarian remnant syndrome
• Overwhelming post-splenectomy infection (OPSI)
• Oxalosis