Diseases and Conditions

Find doctor-approved information about symptoms, causes, diagnosis, treatment and prevention of common diseases and conditions.

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All conditions that start with the letter T
  • Teeth Grinding (Bruxism)

    Teeth grinding, also called bruxism, is the conscious or unconscious grinding of teeth that happens most often in children.

  • Tennis Elbow

    Tennis elbow (lateral epicondylitis) is a common condition that occurs when the outer tendons of the elbow swell or…

  • Testicular Cancer

    Testicular cancer can occur in one or both of a man’s testicles. Learn about the symptoms and how to detect…

  • Testicular Torsion

    Testicular torsion is when a testicle becomes twisted, restricting its blood supply. If not treated quickly, the testicle can become…

  • Thalassemia

    Learn about the causes, symptoms, diagnosis, treatment and complications of thalassemia.

  • Thrush

    Thrush is a yeast infection that occurs on the tongue and mouth. It is caused by a fungus. Newborns, children,…

  • Thyroid Nodules

    Learn about the symptoms of, tests for and treatments of thyroid nodules.

  • Thyroiditis

    Learn about the types, symptoms, causes, diagnosis and treatment of thyroiditis, a name for several disorders that cause inflammation of…

  • Tick-Borne Relapsing Fever

    Learn about tick-borne relapsing fever and how it is treated.

  • Tics and Tourette Syndrome

    Tourette syndrome is a movement disorder that starts in childhood. It makes a person repeatedly twitch, move, or make…

  • Tinnitus

    Tinnitus is when you hear noise in your ears. The noise is often described as ringing, but can also be…

  • Tobacco Addiction

    Tobacco addiction is caused by a dependency on nicotine and habits formed by smoking or using chewing tobacco. With the…

  • Tonsillitis

    Tonsillitis is an inflammatory disease that occurs when your tonsils become infected by a virus or bacteria.

  • Toxic Shock Syndrome

    Toxic shock syndrome is a serious, sometimes life-threatening staph infection caused by bacteria that multiplies quickly and leads to organ…

  • Toxoplasmosis

    Toxoplasmosis is an infection caused by a parasite called Toxoplasma gondii, which can live in cat feces. Learn how to…

  • Transient Ischemic Attack (TIA)

    A transient ischemic attack (TIA) is called a mini stroke, and it can raise your risk of having a major…

  • Transient Synovitis of the Hip

    Learn about the symptoms, causes, diagnosis and treatment of transient synovitis of the hip, a condition that causes sudden hip…

  • Traumatic Brain Injury

    Traumatic brain injuries (TBIs) can be mild, moderate, or severe. Learn about the types of injuries, as well as possible…

  • Trigeminal Neuralgia

    Trigeminal neuralgia is extreme burning, electric or shock-like pain in the face. Learn about the causes, diagnosis and treatment of…

  • Tuberculosis

    Learn about the symptoms of and treatments for tuberculosis.