Gallstones: Symptoms, Causes, Complications, and Treatment for Cholelithiasis

Most people discover they have gallstones the same way Ramesh did during an ultrasound done for something else entirely. No pain, no symptoms, just a radiologist’s report mentioning “cholelithiasis” and a follow-up appointment that suddenly feels urgent.

Others discover it differently. A severe pain in the upper right abdomen after a heavy meal the kind that radiates to the shoulder and doesn’t go away for hours. Nausea, vomiting, fever. A trip to the emergency room that ends with a diagnosis they weren’t expecting.

Gallstones are one of the most common digestive conditions in India. Many people carry them for years without knowing. Others have their lives disrupted by a single bad episode. Understanding what gallstones are, what causes them, and when they actually need treatment is what this article covers.

What Are Gallstones?

The gallbladder is a small organ under the liver that stores bile the digestive fluid the liver produces to help break down fat. Gallstones are hardened deposits that form inside the gallbladder when the components of bile primarily cholesterol and bilirubin fall out of balance and crystallise.

They range in size from a grain of sand to a golf ball. A person can have one large stone or dozens of small ones. Many cause no problems at all these are called silent gallstones or asymptomatic gallstones. The trouble starts when a stone moves into a bile duct and blocks it.

Types of Gallstones

Cholesterol stones The most common type, making up around 80% of gallstones. Form when bile contains too much cholesterol and not enough bile salts to keep it dissolved. Excess cholesterol secretion driven by obesity, diet, and genetics is the primary driver.

Pigment stones Darker, smaller stones formed from excess bilirubin. More common in people with liver disease, bile duct infections, or conditions that cause increased red blood cell breakdown like sickle cell disease or cirrhosis. Bilirubin imbalance is the key mechanism.

Mixed gallstones A combination of cholesterol and pigment components. Common in clinical practice.

Gallbladder sludge Not true stones, but a thick, sludgy mixture of bile components that can precede stone formation or cause similar symptoms. Often found incidentally on ultrasound.

Symptoms of Gallstones

Silent gallstones cause no symptoms they sit in the gallbladder indefinitely without ever causing a problem. Many people with asymptomatic gallstones never need treatment.

When symptoms do occur, they usually happen because a stone has moved and is blocking something:

• Severe upper right abdominal pain — the classic biliary colic. Comes on suddenly, usually after a fatty meal, and can last anywhere from 30 minutes to several hours. Often radiating shoulder pain particularly to the right shoulder or between the shoulder blades
• Nausea and vomiting — common during a painful episode
• Indigestion, bloating after eating, and fullness after meals — particularly after fatty or fried foods. Fatty food intolerance is one of the earliest and most consistent symptoms
• Flatulence — frequent gas and belching
• Jaundice — yellowing of skin and eyes when a stone blocks the common bile duct, preventing bile from reaching the intestine
• Clay-coloured stools — pale or white stools when bile flow is blocked
• Fever with gallstones — indicates infection or inflammation, which is a more urgent situation
• Chest pain due to gallstones — upper abdominal pain can radiate to the chest and be mistaken for cardiac pain

Causes and Risk Factors

Obesity and gallstones The strongest modifiable risk factor. Excess body fat increases cholesterol secretion into bile, increasing the likelihood of stone formation. Visceral obesity is particularly associated with gallstone risk.

High cholesterol and gallstones Elevated blood cholesterol often correlates with excess cholesterol in bile. The liver secretes more cholesterol than bile salts can keep dissolved  the excess crystallises into stones.

Rapid weight loss and gallstones Paradoxically, losing weight too fast  through crash dieting or after bariatric surgery  is a significant gallstone risk factor. Rapid fat mobilisation floods bile with cholesterol. Gradual weight loss is protective; rapid weight loss is not.

Pregnancy and gallstones Pregnancy hormones slow gallbladder emptying and increase cholesterol secretion. Women who have had multiple pregnancies have significantly higher gallstone rates.

Oral contraceptives and gallstones Oestrogen in oral contraceptives increases cholesterol secretion into bile and slows gallbladder motility  both increase gallstone risk.

Diabetes and gallstones Diabetic patients have higher triglyceride levels and impaired gallbladder motility, both of which promote stone formation.

Family history of gallstones Genetic factors influence bile composition and gallbladder motility. A first-degree relative with gallstones significantly increases individual risk.

Sedentary lifestyle Physical inactivity is associated with impaired gallbladder emptying and higher obesity rates both gallstone risk factors.

Fried foods and processed foods Diets high in fried foods, processed foods, and refined carbohydrates promote obesity and alter bile composition unfavourably.

Alcohol and gallstones Moderate alcohol consumption has actually been associated with reduced gallstone risk in some studies. Heavy drinking, however, causes liver disease — which increases pigment stone formation.

Stress and gallstones Chronic stress affects gut motility and bile flow contributing factors in gallstone development.

Diagnosis of Gallstones

Abdominal ultrasound The first and most commonly used test. Highly accurate for detecting gallstones in the gallbladder. Non-invasive, widely available, and inexpensive. The standard initial investigation.

Endoscopic ultrasound More sensitive than regular ultrasound for detecting small stones and gallbladder sludge. Used when standard ultrasound is inconclusive.

CT abdomen scan Useful for detecting complications acute cholecystitis, pancreatitis, perforation. Less sensitive than ultrasound for gallstones themselves.

MRI for gallstones Particularly useful for evaluating the bile ducts. MRCP (magnetic resonance cholangiopancreatography) provides detailed imaging of the biliary system without radiation or contrast.

HIDA scan A nuclear medicine scan that assesses gallbladder function  how well it fills and empties. Used when symptoms suggest gallbladder dysfunction but ultrasound shows no stones.

ERCP (Endoscopic Retrograde Cholangiopancreatography) Both diagnostic and therapeutic. A flexible scope passed through the mouth into the bile duct can visualise stones, remove them, and place stents if needed  all in one procedure. Used when stones are in the bile duct rather than just the gallbladder.

Blood tests — CBC and liver function A CBC test checks for infection and inflammation. Liver function tests assess whether bile duct blockage is affecting the liver. Bilirubin, ALT, AST, and alkaline phosphatase are the key markers.

Complications of Gallstones

Untreated or poorly managed gallstones can lead to serious complications:

Acute cholecystitis Inflammation of the gallbladder, usually caused by a stone blocking the cystic duct. Presents with persistent severe pain, fever, and tenderness. Requires hospitalisation and usually surgery.

Obstructive jaundice A stone in the common bile duct blocks bile flow completely. Jaundice, dark urine, clay-coloured stools, and itching develop. Needs urgent ERCP or surgery.

Pancreatitis due to gallstones Gallstones passing through the bile duct can block the pancreatic duct, triggering acute pancreatitis  a potentially life-threatening condition.

Gallbladder infection (cholangitis) Infection of the bile ducts, presenting with fever, jaundice, and severe abdominal pain. Requires urgent treatment with antibiotics and bile duct drainage.

Small bowel obstruction Rarely, a large gallstone erodes through the gallbladder into the intestine and causes a blockage a condition called gallstone ileus.

Gallbladder cancer Long-standing gallstones, particularly large ones, are associated with an increased though still relatively low risk of gallbladder cancer.

Treatment of Gallstones

Laparoscopic cholecystectomy The standard treatment for symptomatic gallstones. The gallbladder is removed through small keyhole incisions using a camera and instruments. Recovery takes two to three days for most patients. Life without a gallbladder is entirely normal bile flows directly from the liver into the small intestine.

Open gallbladder surgery Used when laparoscopic surgery is not possible due to complications, severe inflammation, or anatomical factors. Longer recovery time.

ERCP for bile duct stones When gallstones have migrated into the bile duct, ERCP can remove them endoscopically without open surgery. Often done before or instead of cholecystectomy in this situation.

Ursodeoxycholic acid and chenodiol Medications that can slowly dissolve small cholesterol gallstones over months to years. Only effective for cholesterol stones, only for patients who cannot have surgery, and recurrence rates after stopping medication are high. Not the first-line treatment for most patients.

Shock wave lithotripsy Sound waves break up stones so they can pass through the bile duct. Rarely used now reserved for very specific situations where surgery is not possible.

Endoscopic gallbladder stenting Placing a stent in the bile duct to maintain drainage when complete stone removal isn’t immediately possible. A temporary measure in complex cases.

Prevention of Gallstones

• Maintain a healthy BMI — gradual, sustained weight loss is protective. Rapid weight loss increases risk
• Eat a high fibre diet — fruits, vegetables, whole grains reduce gallstone risk
• Avoid skipping meals — regular meals keep bile moving and prevent stasis in the gallbladder
• Stay hydrated — adequate fluid intake supports healthy bile composition
• Exercise regularly — physical activity improves gallbladder motility and supports healthy weight
• Limit fried foods, processed foods, and refined carbohydrates
• Avoid rapid weight loss programmes — if weight loss is needed, do it gradually under medical supervision

Can Gallstones Be Treated Without Surgery?

For silent gallstones no symptoms, found incidentally treatment is often not needed. Regular monitoring is sufficient.

For symptomatic gallstones, medication rarely provides lasting relief, and recurrence after stopping is common. Laparoscopic cholecystectomy remains the most effective and definitive treatment. It removes the problem permanently and has a very low complication rate in experienced hands.

When Should You See a Doctor?

See a gastroenterologist or gallbladder surgeon immediately if you have:

• Severe upper right abdominal pain lasting more than a few hours
• Fever alongside abdominal pain this suggests infection
• Jaundice or yellowing of the skin and eyes
• Clay-coloured stools or very dark urine
• Persistent vomiting with abdominal pain

These symptoms indicate a complication bile duct blockage, cholecystitis, or pancreatitis that needs urgent evaluation and treatment.

For non-urgent concerns or if you’ve been told you have asymptomatic gallstones and want expert guidance on what to do next, book an online gallstone consultation through HealthPil gastroenterologist or gallbladder surgeon consultation from home.

How HealthPil Can Help

HealthPil connects you with experienced gastroenterologists and gallbladder surgeons who manage gallstone disease regularly. Whether you need a first opinion on a scan result, guidance on whether surgery is necessary, or support through treatment and recovery expert help is available through an online consultation, without the wait.

Summary

Gallstones (cholelithiasis) are hardened deposits that form in the gallbladder. While some people have no symptoms, others may experience upper right abdominal pain, nausea, jaundice, fever, or discomfort after eating fatty foods. Common risk factors include obesity, high cholesterol, diabetes, pregnancy, rapid weight loss, and a family history of gallstones. 

Doctors diagnose gallstones using imaging tests such as ultrasound, CT scan, MRI, or HIDA scan.Treatment depends on the severity of symptoms and may include medication, ERCP, or laparoscopic gallbladder surgery. Maintaining a healthy weight, eating a balanced diet, and seeking timely medical care can help prevent complications and improve recovery.