The human papillomavirus (HPV) causes the most common of sexually transmitted infections. Vaccines can help protect against the HPV strains that cause genital warts.
Disease
Geographic atrophy
This serious eye condition can occur in people with macular degeneration. Find out about its symptoms and treatments.
Disease
Geographic tongue
Geographic tongue may look alarming, but it does not cause health issues. Sometimes it can cause tongue pain and make you more sensitive to certain foods.
Disease
Germ cell tumors
Learn about these tumors that form from reproductive cells. Explore treatment options, including surgery, chemotherapy and radiation therapy.
Disease
Gestational diabetes
High blood sugar during pregnancy can affect a pregnancy and a baby's health. Read about ways to prevent and treat it.
Disease
Giant cell arteritis
Headache, jaw pain with chewing, and scalp tenderness are the most common symptoms of this inflammation of the lining of the arteries.
Disease
Giardia infection (giardiasis)
This type of infection can cause stomach cramps, upset stomach and loose stools. Find out how to treat and prevent this waterborne parasite.
Disease
Gilbert syndrome
This inherited liver condition affects the liver's ability to break down red blood cells. It usually has no serious medical consequences.
Disease
Gingivitis
Gingivitis is a common and mild form of gum disease that causes irritation, redness and swelling of your gums.
Disease
Glaucoma
Regular eye exams may catch glaucoma early and save your eyesight. Find out about symptoms and treatment for this vision-stealing eye condition.
Disease
Glioblastoma
Glioblastoma — Overview covers diagnosis and treatment of this aggressive form of brain cancer that can be slowed but usually can't be cured.
Disease
Glioma
Gliomas are the most common brain tumors in adults. Learn more about diagnosis and treatment, including innovative research to find new therapies.