Gallstones are small stones that form in the gallbladder or the bile ducts, the tubes that carry bile to the small intestine. They usually don't cause symptoms unless they block the opening to the gallbladder. If that happens, you may have pain in the upper right part of your belly.
If you have a bad attack, or a second attack, you may want to have your gallbladder removed because you are likely to have more attacks.
What are the symptoms of gallstones?
Most people who have gallstones don't have symptoms. When symptoms occur, they can include:
- Pain in the pit of your stomach or in the upper right part of your belly. It may spread to your right upper back or shoulder blade area.
- Pain that may come and go or be steady. It may get worse when you eat.
- Fever and chills, if a gallstone is blocking a bile duct and causing an infection.
- Yellowing of your skin and the whites of your eyes.
Pain can last 15 minutes to 24 hours. Continuous pain for 1 to 5 hours is common. The pain may begin at night and be severe enough to wake you. Pain often starts after eating food that is high in fat. The pain usually makes it hard to get comfortable. Moving around doesn't make the pain go away.
Gallstones develop when cholesterol and other substances in the bile form crystals that become hard stones in the gallbladder. The gallbladder is a small sac located just under the liver. Gallstones can form when too much cholesterol is in the bile or when the gallbladder does not empty properly.
What causes gallstones?
Gallstones form when cholesterol and other substances found in the bile form crystals that become hard stones in the gallbladder. The gallbladder is a small sac found just under the liver. Gallstones can also form if your gallbladder doesn't empty as it should. Or they can form if you have too much cholesterol in your bile. Too much cholesterol in your bile isn't caused by eating too much cholesterol or having high cholesterol (in the blood).
People who are overweight or who are trying to lose weight quickly are more likely to get gallstones.
Most doctors believe that even microscopic gallstones in the gallbladder can cause symptoms. These tiny stones can form a type of sediment called biliary sludge. It often can be seen on an ultrasound of the belly.
How can you prevent gallstones?
There is no sure way to prevent gallstones. But you can reduce your risk of forming gallstones that can cause symptoms.
- Stay at a healthy weight. If you need to lose weight, do so slowly and sensibly.
- Eat regular, balanced meals.
- Be active, and exercise regularly.
How are gallstones diagnosed?
Most people who have gallstones don't know it because they don't have symptoms.
If you have symptoms, your doctor will do a physical exam. He or she will ask you questions about when the pain in your belly started, where it is, and if it comes and goes or is always there. If your doctor thinks you have gallstones, your doctor may order tests to confirm the diagnosis. Tests might include:
- An abdominal ultrasound. This is the best way to confirm gallstones. A technologist moves a wand across your belly to create pictures on a screen.
- A gallbladder scan. Your doctor may do this if your ultrasound didn't show gallstones. In this test, a special dye is injected into a vein in your arm.
- An endoscopic retrograde cholangiopancreatogram (ERCP). This test checks the tubes (ducts) that drain the liver, gallbladder, and pancreas. A flexible, lighted scope (endoscope) and X-ray pictures are used.
How are gallstones treated?
If you don't have symptoms, you probably don't need treatment.
If you do have symptoms and your first gallstone attack causes pain, your doctor may tell you to take pain medicine and wait to see if the pain goes away. You may never have another attack. Waiting to see what happens usually won't cause problems.
If you have a second attack, you may want to have your gallbladder removed. A second attack means you're more likely to have future attacks. Many people have their gallbladders removed. And the body works fine without a gallbladder.
What problems can happen when you have gallstones?
Gallstones can cause many different problems, such as:
- A blockage in the common bile duct.
- Inflammation or infection of the gallbladder (acute cholecystitis). This can happen when a gallstone blocks the cystic duct.
- Inflammation or infection of the common bile duct (cholangitis). This can happen when gallstones get stuck in the common bile duct. In rare cases, this can damage the liver or spread infection.
- Pancreatitis. This is an inflammation of the pancreas.
How can you care for yourself when you have gallstones?
- Rest until you feel better.
- Be safe with medicines. Read and follow all instructions on the label.
- If the doctor gave you a prescription medicine for pain, take it as prescribed.
- If you are not taking a prescription pain medicine, ask your doctor if you can take an over-the-counter medicine.
- Avoid foods that cause symptoms, especially fatty foods. These can make the gallbladder tighten and cause pain.
Copyrighted material adapted with permission from Healthwise, Incorporated. This information does not replace the advice of a doctor.