- TB see Tuberculosis
- Tapeworms
- Tattoos & Skin Problems
- Teen Pregnancy
- Telemedicine
- Temporal Arteritis
- Temporomandibular Joint Dysfunction
- Tendonitis
- Tennis Elbow
- Tension Headache Headaches
- Thalassemia see Anemia
- Throat Cancer
- Throat Disorders see Ear, Nose, Throat
- Throat Pictures
- Thrush : Infant | Adult
- Thyroid Disease
- Tick Bites
- Tinea Capitis
- Tinea Cruris see Jock Itch
- Tinea Infections see Ringworm
- Tinnitus
- TMJ see Temporomandibular Joint Dysfunction
- Tobacco see Smoking & Disease
- Toenail Diseases see Nail Diseases
- Toenail Fungus
- Tongue Cancer see Mouth Cancer
- Tonsils, Tonsillectomy, & Adenoids
- Tooth Decay
- Tooth Disorders see Oral Diseases
- Tourette Syndrome
- Toxic Epidermal Necrolysis
- Toxic Shock Syndrome
- Toxicology
- Toxoplasmosis
- Traveler's Health see Tropical Diseases
- Trematodes
- Trigeminal Neuralgia see Neuralgia
- Tropical Diseases
- Trypanosomiasis
- Tuberculosis
- Tularemia
- Tumor see Cancer
- Typhoid Fever see Salmonella