.

Conditions and treatments beginning with 'O'

All links below go to information on the
NHS Choices website:

• Obesity
• Obsessive compulsive disorder
• Obstructive sleep apnoea
• Occupational therapy
• Oedema
• Oesophageal cancer
• Oligomenorrhoea
• Oligozoospermia
• Onychogryphosis (overgrown nails)
• Onychomycosis
• Operation, going into hospital
• Oral cancer
• Oral thrush in adults
• Oral thrush in babies
• Organ donation
• Orthodontics
• Osteoarthritis
• Osteomalacia
• Osteomyelitis
• Osteopathy
• Osteoporosis
• Otitis externa
• Otitis media
• Otoplasty
• Ovarian cancer
• Ovarian cyst
• Overactive thyroid
• Oxygen treatment, home