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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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All conditions that start with the letter H
  • Huntington's Disease

    Huntington’s disease is a rare, progressive brain disorder. It gradually kills nerve cells in the brain, taking away physical and…

  • Illustration of a blood clot in an artery leading to the heart

    Hypercoagulation

    Hypercoagulation is when your blood forms a clot when it shouldn’t. This clot can then travel through your body. This…

  • Close up of a man wearing a dress shirt with sweat stains in the armpit

    Hyperhidrosis

    Hyperhidrosis is excessive sweating.

  • sore throat, shown red, isolated on white background

    Hyperparathyroidism

    Hyperparathyroidism occurs in your parathyroid glands and results in the production of too much parathyroid hormone and a lack of…

  • female doctor checking for Hyperthyroidism

    Hyperthyroidism

    Hyperthyroidism, or an overactive thyroid, means your thyroid gland makes too much hormone. This can cause weight loss, tremors, and…

  • A cross section of a pituitary gland and endocrine cells

    Hypopituitarism

    Hypopituitarism is a disorder in which the pituitary gland doesn’t make enough hormones.

  • Freezing cold man standing outside in the falling snow at night

    Hypothermia

    Hypothermia is a medical condition. It occurs when you are exposed to bitter cold for a long time and your…

  • doctor examining female patient for hypothyroidism while working in his office

    Hypothyroidism

    Hypothyroidism is an underactive thyroid. Your thyroid controls your metabolism, heart rate, muscles, bones, and other organs.

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