- Safer sex
- Safer sex and STI topics
- Salmonella
- Sarcoidosis
- SARS
- Scabies
- Scalp ringworm
- Scarlet fever
- Schizophrenia
- School sores
- Sciatica
- Scleroderma
- Seasonal affective disorder
- Sebaceous cyst
- Self-harm
- Self-management support
- Sepsis
- Septicaemia (blood poisoning)
- Serotonin syndrome
- Severe acute respiratory syndrome (SARS)
- Severe vomiting in pregnancy
- Sex & cancer
- Sexual assault
- Sexual harassment
- Sexual harm topics
- Sexual health
- Sexual health topics
- Sexually transmitted infections (STIs)
- Shigellosis
- Shingles
- Short stature
- Shoulder pain
- Sickle cell disease
- Silicosis
- Sinusitis – acute
- Sinusitis – acute in children
- Sinusitis – chronic
- Sjögren’s syndrome
- Skin cancer
- Skin cancers
- Skin infection topics
- Skin infections
- Skin infections in children
- Slapped cheek disease
- Sleep conditions
- Sleep problems
- Smoking – reasons to quit
- Snoring
- Snoring or noisy breathing in children
- Snot and sputum
- Social anxiety disorder
- Social isolation
- Social phobia
- Solar keratoses
- Sore throat
- Sore throat – children
- Spina bifida
- Spinal injuries
- Spinal injuries topics
- Spirometry
- Squamous cell carcinoma (SCC)
- Squints
- Standard drinks
- Staph infections – recurring
- Staph skin infections
- Steam inhalation
- Stem cell transplant
- Sterilisation (male)
- Stillbirth
- Stomach (tummy or puku) pain
- Stomach cancer
- Strains and sprains
- Strep throat
- Stress
- Stress at work
- Stroke
- Stroke topics
- Stye
- SUDI
- Sugar – how to cut down
- Suicide prevention
- Sunburn
- Sunburn – treatment
- Support groups
- Surgery – preparing
- Surgical mesh
- Surgical wounds
- Sweaty feet
- Swimmer's ear
- Swimming – water quality
- Syncope
- Syphilis