This condition is known as Cholelithiasis (Presence of stones in the gallbladder). Types of gall stones: The common types of gallstones are cholesterol stones, black pigment and brown pigment. Cholesterol gallstones occur more frequently in female gender as compared to male. Black pigment gallstones occur when there is increased destruction of red blood cells, while brown pigment gallstones occur when there is reduced flow and infection of bile duct. CHOLELITHIASIS: Signs & symptoms: Nausea, vomiting, diarrhoea, obesity, elevated blood triglyceride levels, clay coloured stools, dark urine and Crohn's disease are common symptoms. Causes: It's not clear what causes gallstones to form. Doctors think gallstones may result when: 1)Your bile contains too much cholesterol. 2) Your bile contains too much bilirubin. 3) Your gallbladder doesn't empty correctly. Diagnosis: Diagnosis is confirmed after the doctor examine patient's gallbladder using Ultrasound, abdominal CT scan, Gallbladder radionuclide scan, blood test etc. Treatment: Most of the time, you wonât need treatment for gallstones unless they cause you pain. Sometimes you can pass gallstones without even noticing. If youâre in pain, your doctor will likely recommend surgery. In rare cases, medication may be prescribed.