- Deep vein thrombosis
- Dehydration
- Delirium
- Dementia
- Dementia & driving
- Dengue fever
- Dental – children's oral health
- Dental – tooth decay
- Dental – oral health
- Dental – plaque & tartar
- Depression
- Depression in later life
- Depression – children and young people
- Depression – later life
- Depression – postnatal
- Dermatitis
- DEXA scan
- Diabetes
- Diabetes & alcohol
- Diabetes & driving
- Diabetes & eye problems
- Diabetes overview
- Diabetes self-management
- Diabetes – (pre-existing) and pregnancy
- Diabetes – blood glucose testing
- Diabetes – foot ulcer
- Diabetes – hypoglycaemia
- Diabetes – in pregnancy
- Diabetes – medications
- Diabetes – nerve damage
- Diabetes – prediabetes
- Diabetes – recipes
- Diabetes – sick day plan
- Diabetes – smoking
- Diabetes – type 1
- Diabetes – type 2
- Diabetes – gestational
- Diabetic foot
- Diabetic ketoacidosis
- Diabetic retinopathy
- Diaphragms & caps
- Diarrhoea
- Diphtheria
- Diverticular disease & diverticulitis
- Dix-Hallpike test
- Dry eye
- Dry mouth
- Dust mites
- DVT
- Dysmenorrhoea
- Dyspepsia
- Dyspnoea