- Tantrums
- Tay-Sachs Disease
- Television Habits
- Temperament
- Testicular Torsion
- Tetanus
- Tetracyclines
- Tetralogy of Fallot
- Thalassemia
- Thematic Apperception Test
- Therapeutic Baths
- Throat Culture
- Thumb Sucking
- Tics
- Time-Out Procedure
- Toilet Training
- Tonsillitis
- Tooth Decay
- Toothache
- TORCH Test
- Tourette Syndrome
- Toxic Shock Syndrome
- Toxoplasmosis
- Toys
- Tracheoesophageal Fistula
- Trachoma
- Transposition of the Great Arteries
- Traumatic Amputations
- Trichotillomania
- Truancy
