Gallstones are hardened deposits of digestive fluid that can form in your gallbladder. Your gallbladder is a small, pear-shaped organ on the right side of your abdomen, just beneath your liver. The gallbladder holds a digestive fluid called bile that's released into your small intestine.
Gas and gas pains can strike at the worst possible moment — during an important meeting or on a crowded elevator. And although passing intestinal gas usually isn't serious, it can be embarrassing.
Gastritis is a term used to describe a group of conditions with one thing in common: inflammation of the lining of your stomach. The inflammation of gastritis is often the result of infection with the same bacterium that causes most stomach ulcers.
Genital herpes is a common sexually transmitted disease that affects both men and women. Features of genital herpes include pain, itching and sores in your genital area.
Genital warts, also known as venereal warts or condylomata acuminata, are one of the most common types of sexually transmitted diseases.
Gestational diabetes is a type of diabetes that occurs only during pregnancy. Like other forms of diabetes, gestational diabetes affects the way your body uses sugar (glucose) — your body's main source of fuel.
Gingivitis is a very common and mild form of gum (periodontal) disease that causes swelling (inflammation) of your gums. Because gingivitis can be so mild, you may not be aware that you have the condition.
Most cases of glandular fever are caused by the Epstein-Barr virus (EBV). If you come into close contact with infected saliva and you are not immune (resistant) to glandular fever, EBV will infect the cells on the lining inside of your throat.
Glaucoma is not just one disease, but a group of conditions resulting in optic nerve damage, which diminishes sight. Abnormally high pressure inside your eye (intraocular pressure) usually, but not always, causes this damage.
Your thyroid is a butterfly-shaped gland located at the base of your neck just below your Adam's apple. Sometimes the thyroid gland grows larger than normal — a condition known as goiter.
Gonorrhea is a sexually transmitted bacterium that can infect men and women. Gonorrhea can affect the urethra, rectum and throat of both men and women. In women, gonorrhea can also infect the cervix.
Gastroesophageal reflux disease (GERD) is a chronic digestive disease that occurs when stomach acid or, occasionally, bile flows back (refluxes) into your food pipe (esophagus). The backwash of acid irritates the lining of your esophagus and causes GERD signs and symptoms.
Gout is a complex form of arthritis characterized by sudden, severe attacks of pain, redness and tenderness in joints, often the joint at the base of the big toe.
A grand mal seizure — also known as a tonic-clonic seizure — features a loss of consciousness and violent muscle contractions. It's the type of seizure most people picture when they think about seizures in general.
Graves' disease is the most common form of hyperthyroidism, occurring when your immune system mistakenly attacks your thyroid gland and causes it to overproduce the hormone thyroxine.
Your 8-year-old daughter can't fall asleep because her legs hurt. Your friend's 6-year-old son wakes up in tears with the same complaint. Coincidence?
Gynaecomastia is swelling of the breast tissue in boys or men, caused by an imbalance of the hormones estrogen and testosterone.