- Tau protein test
- Tay-Sachs disease
- Tennis elbow
- Thalassaemia
- TIBC test
- Tietze's syndrome
- Toothache
- Total protein test
- Toxocariasis
- Toxoplasmosis
- TPMT test
- Tracheostomy
- Trachoma
- Traction
- Travel health
- Tremor (essential)
- Trigger finger
- Tuberculosis
- Tuberous sclerosis
- Typhoid fever
- Tick-borne encephalitis
- Traveller's diarrhoea
- Thyroid cancer
- Therapeutic endoscopy of the stomach
- Toxic shock syndrome
- Tendonitis
- Testicular cancer
- Testicles, undescended
- Talipes
- Teething
- Thrush
- Tinnitus
- Tonsillitis
- Tics
- Trichomonas vaginalis
- Thrush, oral - adults
- Thrush, oral - babies
- Tetanus
- Threadworms
- Thrombosis
- Tourette's syndrome
- Transient ischaemic attack
- TURP
- Tooth decay
- Tapeworm infections
- Taenia saginata and taenia solium
- Termination of pregnancy
- Tinea pedis
- Tooth abscess
- Treatment options
- Travel immunisation
- Trichomoniasis
- Testicular feminisation syndrome
- Turner syndrome
- Thyroid, over-active
- Thyroid, under-active
- Thrush, men
- Testicular lumps, benign
- Tranquillisers
- Travel sickness
- Tenosynovitis
- Tamiflu