Taybi Syndrome
Tay-Sach's Disease
Telangiectasia
Testicular Cancer
Tethered Spinal Cord Syndrome
Tetrasomy 18p
Thalassemia (Major & Minor)
Thiolase Deficiency
Thoracic Outlet Syndrome
Tietze Syndrome
Tolosa-Hunt Syndrome
Tooth and Nail Syndrome
TORCH Syndrome
Tourette Disorder/Syndrome
Townes-Brocks Syndrome
Toxic Shock syndrome
Toxoplasmosis
Translocase Deficiency
Treacher Collins syndrome
Tricho-Dento-Osseous Syndrome
Trichorhinophalangeal Syndrome
Triploid Syndrome
Trisomy 6
Trisomy 8
Trisomy 9
Trisomy 9q
Trisomy 10q
Trisomy 13
Trisomy 18
Tuberculosis
Turner's Syndrome
Twin-Twin Transfusion
Typhoid
Tyrosinemia Type 1
Tyrosinemia Type 2