Health encyclopedia: O


 * obesity
 * obesity in children
 * obesity surgery also see weight loss surgery
 * obsessive-compulsive disorder
 * occupational health


 * occupational health for healthcare providers
 * occupational injuries also see occupational health
 * occupational therapy also see rehabilitation
 * ocd also see obsessive-compulsive disorder
 * oil spills


 * ombudsman programs also see patient rights
 * omega-3 fatty acids also see dietary fats
 * oncology also see cancer
 * onychomycosis also see nail diseases
 * open heart surgery also see heart surgery


 * open spine also see spina bifida
 * operation also see surgery
 * ophthalmology also see eye diseases
 * opiates also see drug abuse; heroin
 * opportunistic infections in aids also see hiv/aids and infections


 * oral cancer
 * oral health also see dental health
 * oral health, child also see child dental health
 * oral herpes also see cold sores
 * oral tobacco also see smokeless tobacco


 * organ donation
 * organ transplantation
 * oropharyngeal cancer also see throat cancer
 * orthodontia
 * orthostatic hypotension also see autonomic nervous system disorders; low blood pressure


 * orthostatic intolerance also see autonomic nervous system disorders
 * osteitis deformans also see paget's disease of bone
 * osteoarthritis
 * osteogenesis imperfecta
 * osteomyelitis also see bone infections


 * osteonecrosis
 * osteopenia also see bone density
 * osteoporosis
 * osteosarcoma also see bone cancer
 * ostomy


 * otc medicines also see over-the-counter medicines
 * otitis media also see ear infections
 * ovarian cancer
 * ovarian cysts
 * ovarian disorders


 * ovarian insufficiency also see ovarian disorders; premature ovarian failure
 * over-the-counter medicines
 * overactive bladder
 * overactive thyroid also see hyperthyroidism
 * overweight also see body weight; obesity


 * oxygen therapy
 * ozone