PMS Quit Smoking Sleep Disorders STDs Ulcers Yeast Infection Gallstones are clumps of solid material that form in the gallbladder. They may occur as a single, large stone or many small ones.
Gallstones are a mixture of compounds, but typically they are mostly cholesterol.
One in ten Americans has gallstones. However, most people with gallstones don't know they have them and experience no symptoms. Painless gallstones are called silent gallstones . For an unfortunate minority, however, gallstones can cause painful attacks. Painful gallstones are called symptomatic gallstones, because they cause symptoms.