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 G
  • Galactorrhea

    Galactorrhea occurs when one or both breasts make milk or a milky discharge. Learn about common symptoms and causes.

  • Gallstones

    Gallstones are hard deposits that can form inside the gallbladder, causing pain in the upper abdomen.

  • Gastroparesis

    Gastroparesis is a disorder that happens when your stomach muscles don’t work properly. Learn about the symptoms, diagnosis, treatment and…

  • Generalized Anxiety Disorder

    Generalized anxiety disorder (GAD) is ongoing anxiety that can disrupt your day-to-day life. With treatment, people with GAD can get…

  • Genital Warts

    Genital warts are small, flat, flesh-colored bumps or tiny, cauliflower-like bumps caused by the human papillomavirus (HPV).

  • Gestational Diabetes

    Gestational diabetes is a type of disabetes that starts during pregnancy. It affects your body’s ability to use sugar (glucose)…

  • Giant Cell Arteritis and Polymyalgia Rheumatica

    Giant cell arteritis (GCA) is inflammation of the arteries. Polymyalgia rheumatica (PMR) causes muscle inflammation. They often occur together.

  • Giardiasis

    Giardiasis is an infection of the small intestine caused by a parasite. It is one of the top causes of…

  • Glaucoma

    Glaucoma is an eye disease that happens when fluid builds up in the eye, increasing pressure. Without treatment, it can…

  • Gout

    Gout is a common type of arthritis that causes swelling and pain in your big toe and other joints. Learn…

  • Group B Strep Infection

    Group B strep is a common kind of bacteria that can sicken newborns who are exposed to it during…

  • Growing Pains

    What are growing pains? Growing pains involve your child’s musculoskeletal system, meaning his or her muscles and bones. These pains usually make your child’s legs hurt. They are common in children between 3 and 12 years old and are typically not serious

  • Gynecomastia

    Learn about gynecomastia (breasts in males), including causes and forms of treatment.