- De Quervain's tenosynovitis
- Deafness
- Deep vein thrombosis
- Dehydration – adults
- Dehydration – children and babies
- Delirium
- Dementia
- Dementia – disruptive behaviour
- Dementia – driving
- Dementia – for carers
- Dementia – reducing your risk
- Dementia topics
- Dengue fever
- Depression
- Depression – children and teenagers
- Depression – for young people
- Depression – later life
- Depression – living well with
- Depression – perinatal
- Depression – severe
- Depression overview
- Dermatitis
- DEXA scan
- Diabetes
- Diabetes – (pre-existing) and pregnancy
- Diabetes – blood glucose testing for type 1 diabetes
- Diabetes – complications
- Diabetes – foot ulcer
- Diabetes – gestational
- Diabetes – home blood glucose testing for type 2 diabetes
- Diabetes – hypoglycaemia
- Diabetes – in pregnancy
- Diabetes – management
- Diabetes – nerve damage
- Diabetes – prediabetes
- Diabetes – screening and diagnosis
- Diabetes – self-care
- Diabetes – smoking
- Diabetes – type 1
- Diabetes – type 1 overview
- Diabetes – type 2
- Diabetes – type 2 food and exercise
- Diabetes – type 2 medications
- Diabetes – type 2 overview
- Diabetes – type 2 sick day plan
- Diabetes – types
- Diabetes & alcohol
- Diabetes & driving
- Diabetes & eye problems
- Diabetes & foot care
- Diabetes & Ramadan
- Diabetes overview
- Diabetes self-management
- Diabetes tests
- Diabetes type 1 – sick day plan
- Diabetic ketoacidosis (high blood ketones)
- Diabetic nephropathy
- Diabetic retinopathy
- Dialysis
- Diaphragms and caps
- Diarrhoea
- Diphtheria
- Disability-related resources
- Diverticular disease and diverticulitis
- Dix-Hallpike test
- Down syndrome
- Down syndrome topics
- Driving and road safety
- Dry eye
- Dry mouth
- Dupuytren contracture
- Dust mites
- DVT
- DVT – hospital-related
- DVT – travel related
- Dysmenorrhoea
- Dyspnoea