Medicial Encyclopedia: O
- Obesity
- Obesity hypoventilation syndrome (OHS)
- Obsessive-compulsive disorder
- Obsessive-compulsive personality disorder
- Obstructive uropathy
- Occupational asthma
- Occupational hearing loss
- Oil-based paint poisoning
- Oily hair
- Oily skin
- Oleander
- Olivopontocerebellar atrophy
- Omphalocele
- Omphalocele repair
- Open heart surgery
- Open lung biopsy
- Open pleural biopsy
- Ophthalmoscopy
- Opiate withdrawal
- Opioid intoxication
- Opisthotonos
- Oppositional defiant disorder
- Optic glioma
- Optic nerve atrophy
- Optic neuritis
- Oral cancer
- Oral cholecystogram
- Oral hypoglycemics overdose
- Oral thrush
- Orbit CT scan
- Orbital cellulitis
- Orbital pseudotumor
- Orchitis
- Organic brain syndrome
- Orgasmic dysfunction
- Oropharynx lesion biopsy
- Osgood-Schlatter disease
- Osler-Weber-Rendu syndrome
- Osmolality - blood
- Osmolality - urine
- Osmotic diuresis
- Osmotic fragility
- Osteitis fibrosa
- Osteoarthritis
- Osteogenesis imperfecta
- Osteomalacia
- Osteomyelitis
- Osteopenia - premature infants
- Osteoporosis
- Osteosarcoma
- Ostomy - resources
- Otitis
- Otitis media - chronic
- Otitis media with effusion
- Otosclerosis
- Ovarian cancer
- Ovarian cancer dangers
- Ovarian cysts
- Ovarian growths
- Ovarian hyperstimulation syndrome
- Ovarian hypofunction
- Ovarian overproduction of androgens
- Oven cleaners
- Over-the-counter birth control
- Overcoming breastfeeding problems
- Overdose
- Overweight
- Oxalic acid
- Oxazepam overdose
- Oxygen therapy - infants
- Ozena