Conditions We Cover
Find treatment options by the condition they treat. Each page explains the condition and lists the medicines used for it.
Obesity
Obesity is a chronic condition in which excess body fat builds up enough to damage health, usually defined by a BMI of 30 or above. Treatment combines lifestyle changes with medicines such as orlistat or combined bupropion and naltrexone.
2 medicines
View Obesity
Obsessive-Compulsive Disorder
Obsessive-compulsive disorder (OCD) combines intrusive, unwanted thoughts with repeated actions or rituals carried out to relieve the distress they cause. It's treated with exposure-based therapy and SSRIs such as fluoxetine or sertraline.
6 medicines
View Obsessive-Compulsive Disorder
Ocular Hypertension
Ocular hypertension means the pressure inside the eye is consistently above normal, the leading modifiable risk factor for glaucoma. It's managed with pressure-lowering eye drops such as latanoprost or timolol.
12 medicines
View Ocular Hypertension
Ocular Inflammation
Ocular inflammation is swelling, redness, or irritation affecting any part of the eye, often after injury, surgery, or infection. It's treated with corticosteroid eye drops, sometimes combined with an antibiotic or anti-inflammatory.
2 medicines
View Ocular Inflammation
Oedema
Oedema is fluid trapped in body tissues, most visible as swelling in the legs, ankles, and feet, and usually a sign of an underlying process such as heart, kidney, or liver disease. It's treated with diuretics like furosemide or spironolactone.
9 medicines
View Oedema
Oesophageal Candidiasis
Oesophageal candidiasis is a Candida yeast infection of the food pipe that mostly affects people with significantly weakened immunity. It's treated with systemic antifungals such as fluconazole, with voriconazole reserved for resistant cases.
1 medicine
View Oesophageal Candidiasis
Oestrogen Deficiency
Oestrogen deficiency is a drop in circulating oestrogen, most often around menopause, causing hot flushes, vaginal dryness and bone loss. Hormone replacement therapy restores oestrogen levels and relieves symptoms.
1 medicine
View Oestrogen Deficiency
Oestrogen Receptor Positive Breast Cancer
Oestrogen receptor positive breast cancer is the most common breast cancer subtype. Oestrogen signalling drives tumour growth, and treatment focuses on blocking that signal with hormone therapy such as tamoxifen.
1 medicine
View Oestrogen Receptor Positive Breast Cancer
Onchocerciasis
Onchocerciasis, also called river blindness, is a parasitic infection spread by blackfly bites near fast-flowing rivers. A single dose of ivermectin kills the larvae and controls the infection.
1 medicine
View Onchocerciasis
Onychomycosis
Onychomycosis is a fungal infection of the finger or toe nails that causes thickening, discolouration and crumbling. Oral antifungals such as terbinafine clear the infection over several months.
2 medicines
View Onychomycosis
Open-Angle Glaucoma
Open-angle glaucoma is the most common form of glaucoma, a slow, usually painless rise in eye pressure that damages the optic nerve before symptoms appear. Eye drops that lower pressure are the standard first treatment.
2 medicines
View Open-Angle Glaucoma
Opioid Dependence
Opioid dependence is a chronic condition in which the brain adapts to repeated opioid use and can no longer regulate mood, pain and motivation without it. Naltrexone helps prevent relapse once detoxification is complete.
1 medicine
View Opioid Dependence
Orthostatic Hypotension
Orthostatic hypotension is a sudden fall in blood pressure that happens within minutes of standing up, causing dizziness or fainting. Lifestyle measures come first, with midodrine used when they are not enough.
1 medicine
View Orthostatic Hypotension
Osteoarthritis
Osteoarthritis is a degenerative joint condition in which cartilage wears down over time, causing pain, stiffness and reduced mobility, most often in the knees, hips and hands. NSAIDs relieve pain alongside exercise and weight management.
15 medicines
View Osteoarthritis
Osteodystrophy
Osteodystrophy is a bone disease caused by disordered calcium, phosphate and vitamin D metabolism, most often as a complication of chronic kidney disease. It is treated mainly by restoring active vitamin D with calcitriol.
1 medicine
View Osteodystrophy
Osteomalacia
Osteomalacia is a softening of adult bone caused by severe vitamin D deficiency, leading to bone pain, muscle weakness and a higher fracture risk. It is treated by correcting vitamin D and calcium levels.
2 medicines
View Osteomalacia
Osteoporosis
Osteoporosis is the gradual thinning of bone that raises fracture risk, especially after menopause. It is treated with bisphosphonates, other bone-protective medicines, and lifestyle measures that support bone strength.
3 medicines
View Osteoporosis
Otitis Media
Otitis media is an infection of the middle ear that is especially common in young children, usually following a cold or another upper respiratory illness. Bacterial cases are treated with a course of antibiotics.
2 medicines
View Otitis Media
Ovarian Cancer
Ovarian cancer is a malignancy that develops in one or both ovaries and is often diagnosed late because early symptoms are vague. Treatment usually combines surgery with chemotherapy.
1 medicine
View Ovarian Cancer
Overactive Bladder
Overactive bladder is a sudden, hard-to-ignore urge to pass urine, often with frequent trips to the toilet and waking at night. It is treated with bladder training and medicines such as solifenacin and mirabegron.
6 medicines
View Overactive Bladder
Overweight
Overweight means carrying more body fat than is healthy for your height, defined by a body mass index between 25 and 29.9. Lifestyle change is the foundation of treatment, with medicines such as orlistat used when needed.
1 medicine
View Overweight