T
- Tachycardia
- Tachycardia (ventricular)
- Tailbone pain
- Talipes
- Talipes equinovarus
- Tamponade
- Tapeworm
- TAPVC - child
- TAPVD - child
- TAPVR - child
- Tardive dyskinesia
- Tarlov cyst
- Tarsal navicular fracture
- Tay-Sachs disease
- TB
- Tears, vaginal
- Teeth grinding
- Teething
- Telangiectasia
- Temporal arteritis
- Temporomandibular disorders
- Tendinopathy
- Tendinopathy, Peroneal
- Tendinopathy, shoulder
- Tendinosis
- Tendonitis
- Tendonitis, Peroneal
- Tendonitis, shoulder
- Tennis elbow
- Tennis shoulder
- Tenosynovitis
- Tension-type headache
- Tension headache
- Testicular cancer
- Tetanus
- Tetralogy of Fallot
- Text blindness
- Thalassemia
- Thigh bone fracture
- Thoracic outlet syndrome
- Threatened abortion
- Threatened miscarriage
- Threatened pregnancy loss
- Three-day measles
- Throat cancer
- Throat infection
- Thrombophlebitis
- Thrush
- Thyroid cancer
- Thyroid disorders
- TIA
- Tibia fracture
- Tietze’s syndrome
- Tinea capitis
- Tinea corporis
- Tinea cruris
- Tinea faciei
- Tinea infection
- Tinea manus
- Tinea nigra
- Tinea pedis
- Tinea unguium
- Tinea versicolor
- Tinnitus
- Tired blood
- TMD
- TMJ osteoarthritis
- TMJ syndrome
- Tobacco use disorder
- Toe fracture
- Toe sprain
- Tongue cancer
- Tonsillopharyngitis
- Tooth abscess
- Tooth decay
- Torn meniscus
- Torticollis
- Total anomalous pulmonary venous connection - child
- Total anomalous pulmonary venous drainage - child
- Total anomalous pulmonary venous return - child
- Tourette syndrome
- Tourette syndrome - child
- Toxemia of pregnancy
- Toxic hepatitis
- Toxic shock syndrome
- Toxoplasmosis
- Transient ischemic attack
- Transient RDS
- Transient tachypnea of newborn
- Transmural myocardial infarction
- Transverse wrist fracture
- Trauma
- Traumatic brain injury
- Traveler's diarrhea
- Trench mouth
- Trichomoniasis
- Trichopoliodystrophy
- Tricuspid atresia - child
- Tricuspid regurgitation
- Tricuspid stenosis
- Tricuspid valve disease
- Trigeminal neuralgia
- Trigger finger
- Triglycerides, high
- Trisomy 21
- Tropia
- Truncus arteriosus - child
- TS - child
- TSS
- TTN
- Tubal pregnancy
- Tuberculosis
- Tularemia
- Tumor, gastrointestinal stromal
- Turf toe
- Turista
- Turner syndrome
- Tympanic membrane perforation
- Tympanic membrane perforation, eardrum—ruptured or perforated
- Type 1 diabetes
- Type 2 diabetes
- Type 2 respiratory distress syndrome
- Type A (H1N1) flu
- Type II Chiari malformation
- Typhoid fever