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Diseases and Conditions

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

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  • Tennis elbow - tear in the common extensor tendon of the arm

    Tennis Elbow

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

  • Male doctor and testicular cancer patient are discussing about testicular cancer test report.

    Testicular Cancer

    Testicular cancer is the most common type of cancer in young and middle-aged white men, but it can be treated…

  • A man sits on an exam table in a doctor’s office. Testicular torsion is an emergency that happens when a man’s testicles rotate and the spermatic cord becomes twisted. It can occur at any age.

    Testicular Torsion

    Testicular torsion happens when a man’s testicles rotate and the spermatic cord becomes twisted. This can happen at any…

  • Thalassemia is a group of inherited blood disorders that prevent your body from producing the amount of hemoglobin it needs.

    Thalassemia

    Thalassemia is a group of inherited blood disorders that prevent your body from producing the amount of hemoglobin it…

  • Baby sticking out tongue with white coating from oral thrush

    Thrush

    Thrush is a yeast infection that occurs on your tongue and the lining of your mouth.

  • Thyroid Nodules

    A thyroid nodule is a lump in the thyroid gland in your neck. More than 90% of them are not…

  • Woman holding throat in pain. When you have Hashimoto’s disease, your immune system attacks the thyroid gland. When this happens, your thyroid can’t make hormones normally.

    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

    Tick-borne relapsing fever (TBRF) is a bacterial infection spread by ticks. It shows up as repeated episodes of fever, headaches,…

  • A woman grimaces while putting her fingers in her ears. Tinnitus causes you to hear an “internal” noise in one ear or both ears. You may hear the noise constantly, or it may come and go.

    Tinnitus

    Tinnitus is a problem that causes you to hear an “internal” noise in one ear or both ears. You may…

  • . Closeup of the broken cigarette on female hand.

    Tobacco Addiction

    Smoking or chewing tobacco is very dangerous for your health, but there are many resources available to help you…

  • Doctor examining a child, checking her throat and tonsils. Common tonsillitis symptoms include redness and feeling like your throat or neck glands are swollen due to inflammation of the tonsils.

    Tonsillitis

    Tonsillitis is an inflammation of the tonsils that happens when they become infected by a virus or bacteria. It is…

  • Smiling school children stand against a fence on the playground. Tourette syndrome is a movement disorder that causes a person to make repeated, uncontrolled twitches, movements, or sounds known as tics.

    Tourette Syndrome and Tics

    Tourette syndrome is a movement disorder that causes a person to make repeated, uncontrolled twitches, movements, or sounds. It starts…

  • Toxic Shock Syndrome

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

  • A gloved hand holds a magnifying glass up to a model of a hip joint. Transient synovitis of the hip, also called toxic synovitis, is an inflammation and swelling of the tissues around the hip joint.

    Toxic Synovitis, or 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…

  • Toxoplasma gondii on colorful background. Protozoan, which is transmitted from cats and other animals and causes toxoplasmosis, is especially dangerous for pregnant women. 3D illustration.

    Toxoplasmosis

    Toxoplasmosis is an infection caused by a parasite called Toxoplasma gondii.

  • Illustration of blood vessels

    Transient Ischemic Attack

    A transient ischemic attack is a type of stroke. It is often called a warning stroke because it increases the…

  • Female doctor wrapping the head of a young man with gauze

    Traumatic Brain Injury

    A traumatic brain injury is any sudden injury to your brain. It could be from a bump, blow, or jolt…

  • Traveler’s Diarrhea

    Traveler’s diarrhea is a common travel-related illness that anyone can get when traveling to certain areas. Most cases are mild…

  • Trigeminal Neuralgia

    Trigeminal neuralgia is a condition that causes burning, electric or shock-like pain in the face. It is caused by a…

  • Tuberculosis

    Tuberculosis is an infection caused by bacteria. Tuberculosis usually affects the lungs. But it can also affect your joints, kidneys,…

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