T
- T-cell lymphoma
- Tachycardia
- Takayasu’s arteritis
- Takotsubo cardiomyopathy
- Tapeworm infection
- TAPVR
- Tay-Sachs disease
- TB
- TBI
- Tears, decreased production
- Teen depression
- Teeth grinding
- Teeth grinding (bruxism)
- Temporal arteritis
- Temporal lobe seizure
- Temporomandibular disorders
- Temporomandibular joint disorders
- TEN
- Tendinitis
- Tendinitis, Achilles
- Tendinitis, patellar
- Tendinopathy
- Tennis elbow
- Tenosynovitis, de Quervain’s
- Tension headache
- Testicle, retractile
- Testicle, undescended
- Testicular cancer
- Testicular torsion
- Testosterone deficiency
- Tetanus
- Tetralogy of Fallot
- TGA
- Thalassemia
- Thoracic aortic aneurysm
- Thoracic outlet syndrome
- Three-day measles
- Throat cancer
- Thromboangiitis obliterans
- Thrombocytopenia
- Thrombocytosis
- Thrombophlebitis
- Thrush, oral
- Thumb arthritis
- Thunderclap headaches
- Thyroid cancer
- Thyroid gland enlargement
- Thyroid nodules
- Thyroid, overactive
- Thyroiditis, chronic lymphocytic
- TIA
- Tic douloureux
- Tinea barbae
- Tinea capitis
- Tinea corporis
- Tinea cruris
- Tinea pedis
- Tinea versicolor
- Tinnitus
- TMD
- TMJ disorders
- Toe walking in children
- Toenail fungus
- Tongue cancer
- Tongue tie
- Tongue-tie (ankyloglossia)
- Tonic-clonic (grand mal) seizure
- Tonic-clonic seizure
- Tonsil cancer
- Tonsillitis
- Tooth abscess
- Tooth decay
- Torn meniscus
- Torsion, testicular
- Torticollis, spasmodic
- Total anomalous pulmonary venous connection
- Total anomalous pulmonary venous return (TAPVR)
- Tourette syndrome
- Tourette’s
- Toxemia
- Toxic epidermal necrolysis
- Toxic hepatitis
- Toxic shock syndrome
- Toxoplasmosis
- Tracheomalacia
- Trachoma
- Transient global amnesia
- Transient ischemic attack (TIA)
- Transposition of great vessels
- Transposition of the great arteries
- Transverse myelitis
- Traumatic brain injury
- Traumatic grief
- Traveler’s diarrhea
- Trichinosis
- Trichomoniasis
- Trichotillomania (hair-pulling disorder)
- Tricuspid atresia
- Tricuspid valve disease
- Tricuspid valve regurgitation
- Trigeminal neuralgia
- Trigger finger
- Triple X syndrome
- Trisomy 21 syndrome
- Trisomy X
- Trouble swallowing
- Truncus arteriosus
- Trypanosomiasis, American
- Tuberculosis
- Tuberous sclerosis
- Tubular adenoma of the colon
- Tumor, salivary gland
- Tumor, spinal
- Turner syndrome
- Tympanic membrane perforation
- Type 1 diabetes
- Type 1 diabetes in children
- Type 2 diabetes
- Type 2 diabetes in children
- Typhoid fever