Signs of Fatty Liver Disease You Shouldn’t Ignore
Fatty liver disease is often described as a silent condition because many people experience no obvious symptoms during its early stages. It may be discovered only after routine blood tests show abnormal liver enzymes or an ultrasound performed for another reason reveals excess fat in the liver. (NIDDK)
The condition commonly called nonalcoholic fatty liver disease, or NAFLD, is now also known as metabolic dysfunction-associated steatotic liver disease, or MASLD. MASLD refers to excess liver fat occurring alongside at least one cardiometabolic risk factor, such as excess body weight, abnormal blood glucose, high blood pressure, high triglycerides, or low HDL cholesterol. (NIDDK)
Most of the symptoms discussed below are not specific to fatty liver disease. They can also occur with gallbladder problems, viral hepatitis, medication-related liver injury, digestive disorders, and many other conditions. Symptoms alone cannot confirm fatty liver disease, so persistent or concerning changes should be evaluated by a healthcare professional.
1. Persistent Tiredness
Unexplained fatigue is one of the symptoms most frequently reported by people who have symptomatic fatty liver disease. You may feel unusually tired, weak, or lacking in energy even after sleeping adequately.
Fatigue is extremely common and can result from anaemia, thyroid disorders, diabetes, infections, sleep apnoea, stress, poor sleep, and many other causes. It should therefore not be assumed to come from the liver without appropriate evaluation. Both NIDDK and the NHS identify tiredness as a possible symptom of fatty liver disease, while emphasising that many people have no symptoms at all. (NIDDK)
Arrange a medical assessment when tiredness is persistent, worsening, or accompanied by abdominal discomfort, jaundice, unexplained weight loss, swelling, or abnormal laboratory results.
2. Discomfort in the Upper-Right Abdomen
Some people experience a dull ache, pressure, heaviness, or discomfort beneath the ribs on the upper-right side of the abdomen. This is the general location of the liver.
The discomfort may occur when the liver becomes enlarged or when inflammation affects the tissue surrounding it. However, pain in this area can also come from the gallbladder, stomach, intestines, muscles, ribs, or lungs. Upper-right abdominal discomfort is recognised as a possible symptom of fatty liver disease, but it is not enough to make a diagnosis. (NIDDK)
Seek urgent medical attention when the pain is sudden or severe, occurs with fever or repeated vomiting, follows an injury, or is accompanied by yellowing of the skin or eyes.
3. Feeling Generally Unwell
Some people with liver disease report a nonspecific feeling of being unwell, sometimes called malaise. This may involve reduced energy, poor concentration, mild nausea, or simply not feeling like yourself.
This symptom is not unique to fatty liver disease and should be interpreted alongside medical history, examination findings, and laboratory tests. The NHS lists feeling generally unwell among the possible symptoms of fatty liver disease. (nhs.uk)
4. An Enlarged Liver
An enlarged liver may not cause a noticeable symptom and is often detected during a physical examination or imaging study. A clinician may feel enlargement beneath the right rib cage, or an ultrasound, CT scan, or MRI may identify it.
An enlarged liver does not automatically mean fatty liver disease. It can also occur with viral infections, heart conditions, alcohol-related liver disease, medication injury, and other disorders. NIDDK notes that an enlarged liver is one of the findings doctors may look for when evaluating possible fatty liver disease. (NIDDK)
5. Unexpectedly Abnormal Liver Blood Tests
Abnormal blood tests are not a physical symptom, but they are an important warning sign that should not be ignored. Elevated alanine aminotransferase, or ALT, and aspartate aminotransferase, or AST, may prompt further testing for fatty liver and other liver conditions.
However, liver enzymes can be normal even when MASLD is present. They can also become elevated for many reasons unrelated to fatty liver, including viral hepatitis, alcohol use, medications, supplements, muscle injury, and other diseases. AASLD notes that normal enzyme levels do not exclude MASLD. (AASLD)
Do not attempt to diagnose the condition from one laboratory value. A clinician should interpret the complete pattern, your medical history, medication use, alcohol intake, metabolic risks, and imaging results.
6. Darkened, Thickened Skin Patches
Dark, velvety patches—often appearing around the neck, underarms, knuckles, elbows, or knees may be a sign of insulin resistance. This skin change is known as acanthosis nigricans.
It is not caused directly by liver fat, but insulin resistance is closely associated with metabolic conditions that increase the likelihood of MASLD. NIDDK lists darkened skin patches associated with insulin resistance among the physical signs clinicians may notice during an evaluation. (NIDDK)
A healthcare professional may recommend checking blood glucose, blood pressure, cholesterol, triglycerides, body-weight trends, and liver health.
Signs That May Suggest Advanced Liver Damage
Early fatty liver disease usually causes few symptoms. More obvious symptoms may develop if inflammation and scarring progress to advanced fibrosis or cirrhosis. MASLD can progress to metabolic dysfunction-associated steatohepatitis, or MASH, in which liver fat is accompanied by inflammation and liver-cell damage. Persistent injury can eventually lead to fibrosis and cirrhosis. (NIDDK)
The following signs require prompt medical assessment because they may indicate significant liver dysfunction or another serious condition.
7. Yellow Skin or Eyes
Yellowing of the skin or the whites of the eyes is called jaundice. It occurs when bilirubin builds up in the blood.
Jaundice is not a typical early symptom of uncomplicated fatty liver. In someone with MASLD, it may suggest advanced liver damage or another condition affecting the liver or bile ducts. NIDDK identifies jaundice as a possible symptom when cirrhosis has progressed. (NIDDK)
Contact a healthcare professional urgently if you develop yellow eyes or skin, especially when accompanied by dark urine, pale stools, fever, pain, confusion, or vomiting.
8. Abdominal Swelling
A gradually enlarging or tight abdomen may be caused by fluid accumulating in the abdominal cavity. This condition is called ascites.
Ascites can develop when advanced liver scarring interferes with blood flow and fluid regulation. It can also occur because of heart failure, kidney disease, cancer, infection, or other medical problems. NIDDK lists ascites among the complications of advanced cirrhosis. (NIDDK)
New abdominal swelling needs prompt medical evaluation. A person with known cirrhosis should seek urgent care for swelling accompanied by fever, increasing pain, breathing difficulty, reduced urination, confusion, or rapid weight gain.
9. Swelling in the Legs and Ankles
Fluid may also build up in the feet, ankles, or lower legs. This is known as oedema or edema.
Leg swelling has many possible causes, including heart, kidney, vein, medication, and liver problems. When liver disease is advanced, reduced protein production and changes in blood flow can contribute to fluid retention. Edema is recognised as a possible feature of cirrhosis. (NIDDK)
Sudden one-sided swelling, chest pain, or shortness of breath requires urgent assessment because it may signal a blood clot or another emergency.
10. Loss of Appetite or Unexplained Weight Loss
A reduced appetite, feeling full quickly, nausea, or losing weight without trying can occur with advanced liver disease. These symptoms are nonspecific and can also arise from digestive disorders, infections, medication effects, depression, thyroid disease, and cancer.
Unintentional weight loss should not be confused with gradual, planned weight management recommended for some people with MASLD. The NHS lists appetite loss, nausea, and unintended weight loss among possible symptoms of advanced liver disease and cirrhosis. (nhs.uk)
Arrange an evaluation when weight loss is unexplained, rapid, or accompanied by weakness, pain, jaundice, vomiting, or changes in bowel habits.
11. Easy Bruising or Unusual Bleeding
The liver produces proteins required for normal blood clotting. Advanced liver dysfunction may therefore contribute to easy bruising, frequent nosebleeds, prolonged bleeding, or other bleeding problems.
Unusual bruising or bleeding can also be caused by medicines, platelet disorders, vitamin deficiencies, and blood diseases. It should not be attributed to fatty liver without testing. Easy bruising is included among recognised symptoms of significant liver problems. (Mayo Clinic)
Vomiting blood, passing black tarry stools, or passing a large amount of blood is an emergency. Advanced cirrhosis can produce enlarged veins called varices, which may rupture and cause life-threatening internal bleeding. (NIDDK)
12. Persistent Itchy Skin
Generalised itching without an obvious rash may occur with some forms of liver disease, particularly when bile flow is impaired. It is not one of the most characteristic early signs of fatty liver disease, but it may appear with advanced liver dysfunction.
Itching has numerous other causes, including dry skin, allergies, medications, kidney disease, thyroid disorders, and dermatological conditions. Severe or persistent itching accompanied by jaundice, pale stools, or dark urine warrants medical assessment. (Mayo Clinic)
13. Dark Urine or Pale Stools
Very dark urine and unusually pale, grey, or clay-coloured stools can indicate a problem with bilirubin processing or bile flow.
These changes are not typical early symptoms of fatty liver and may point to advanced liver disease, bile-duct blockage, gallstones, hepatitis, or another condition. They should be assessed promptly, particularly when accompanied by jaundice or abdominal pain. (Mayo Clinic)
Remember that dehydration, foods, medicines, and supplements can also change urine or stool colour.
14. Confusion, Poor Concentration, or Unusual Drowsiness
Advanced liver disease can allow substances normally processed by the liver to accumulate and affect the brain. This complication is called hepatic encephalopathy.
Possible signs include confusion, forgetfulness, personality changes, difficulty concentrating, reversed sleeping patterns, unusual drowsiness, slurred speech, or reduced consciousness. NIDDK identifies confusion, memory problems, personality changes, and sleep disturbances as possible complications of cirrhosis. (NIDDK)
Sudden confusion or reduced consciousness is a medical emergency. Do not assume it is simply tiredness or a symptom of fatty liver.
You Can Have Fatty Liver Without Any Symptoms
The absence of symptoms does not prove that the liver is healthy. MASLD is frequently found incidentally through liver-enzyme tests or abdominal imaging. Some people can have inflammation or fibrosis without noticeable warning signs. (AASLD)
People with certain metabolic risks may benefit from discussing liver assessment with their clinician even when they feel well. These risks include:
- Type 2 diabetes or prediabetes
- Overweight, obesity, or increased waist circumference
- High blood pressure
- High triglycerides or abnormal cholesterol levels
- Multiple features of metabolic syndrome
AASLD associates MASLD particularly with obesity, type 2 diabetes, hypertension, and abnormal blood lipids. (AASLD)
How Fatty Liver Disease Is Diagnosed
No symptom, home test, or single blood result can diagnose fatty liver disease. Doctors may use several forms of assessment.
Medical history
A clinician may ask about:
- Weight and waist changes
- Diabetes, cholesterol, and blood pressure
- Alcohol consumption
- Prescription and nonprescription medicines
- Herbal products and supplements
- Family history of liver disease
- Previous blood-test or imaging results
These questions help distinguish MASLD from alcohol-associated liver disease, viral hepatitis, medication injury, and other causes of liver fat.
Blood tests
Blood testing may include ALT, AST, platelet count, bilirubin, albumin, and other markers. Doctors may also test for viral hepatitis and conditions that can resemble fatty liver disease.
Scores calculated from routine results, such as the FIB-4 score, may help estimate the likelihood of advanced fibrosis, but they must be interpreted in the appropriate clinical context. (NIDDK)
Imaging
Ultrasound, CT, or MRI may detect fat in the liver. Elastography tests, including vibration-controlled transient elastography commonly known as FibroScan, measure liver stiffness and can help assess possible fibrosis. (NIDDK)
An ordinary ultrasound can identify liver fat but may not accurately determine whether inflammation or early scarring is present.
Liver biopsy
A liver biopsy is not required for everyone. It may be recommended when the diagnosis remains uncertain or when other tests suggest MASH, advanced fibrosis, or cirrhosis. NIDDK notes that biopsy can confirm steatohepatitis and show the severity of liver injury and fibrosis. (NIDDK)
When to Seek Immediate Medical Care
Seek urgent or emergency medical attention for:
- Vomiting blood
- Black, tarry, or bloody stools
- Sudden confusion or severe drowsiness
- Fainting or loss of consciousness
- Severe abdominal pain
- Rapidly increasing abdominal swelling
- Jaundice with fever, vomiting, or confusion
- Difficulty breathing
- Inability to keep fluids down
These symptoms can indicate internal bleeding, infection, liver decompensation, bile-duct obstruction, or another serious condition and should not be managed with home remedies.
What to Do After a Fatty Liver Diagnosis
A diagnosis does not automatically mean that severe permanent damage has occurred. The management plan depends on whether there is simple fat accumulation, inflammation, fibrosis, or cirrhosis and on the person’s metabolic and cardiovascular risks.
For people with overweight or obesity, gradual weight loss is a major evidence-based treatment. NIDDK states that losing approximately 3%–5% of body weight may reduce liver fat, while losing around 7%–10% may be needed to improve inflammation and fibrosis. Rapid weight loss and malnutrition can worsen liver disease, so changes should be gradual and medically appropriate. (NIDDK)
Other important measures may include:
- Eating a balanced, minimally processed diet
- Controlling portion sizes
- Performing regular physical activity
- Managing diabetes, cholesterol, triglycerides, and blood pressure
- Discussing alcohol use with a healthcare professional
- Taking medicines exactly as prescribed
- Avoiding unverified liver-detox products
- Attending recommended follow-up appointments
NIDDK advises choosing nutritious foods, limiting portions when needed, maintaining an appropriate weight, and replacing saturated and trans fats with unsaturated fats. (NIDDK)
Do not stop a prescribed medicine because you suspect it affects your liver without speaking to the prescriber. Likewise, do not begin herbal remedies or concentrated supplements advertised as liver cleanses; some supplements can damage the liver or interact with medications.
Frequently Asked Questions
What are the first signs of fatty liver disease?
Many people have no early signs. When symptoms occur, the more commonly reported ones are persistent tiredness and discomfort in the upper-right abdomen. Abnormal liver tests or fat detected during imaging may be the first clue. (NIDDK)
Can you feel a fatty liver?
You usually cannot directly feel fat accumulating in the liver. Some people experience dull upper-right abdominal discomfort, and a clinician may detect an enlarged liver during an examination. Imaging is generally required to identify liver fat. (NIDDK)
Can fatty liver cause jaundice?
Uncomplicated early fatty liver generally does not cause jaundice. Yellowing of the skin or eyes may indicate advanced liver dysfunction or another liver or bile-duct disorder and requires prompt medical evaluation. (NIDDK)
Can liver enzymes be normal with fatty liver?
Yes. Normal ALT and AST values do not completely exclude MASLD or fibrosis. Doctors consider metabolic risks, platelet count, imaging, fibrosis assessments, and other clinical information rather than relying on one enzyme result. (AASLD)
Is fatty liver reversible?
Liver fat and inflammation may improve, particularly when the condition is identified before advanced cirrhosis develops. Gradual weight reduction, activity, metabolic-risk management, and appropriate medical care can reduce liver fat and may improve inflammation and fibrosis. (NIDDK)
Does abdominal bloating mean fatty liver?
Not necessarily. Ordinary bloating is commonly caused by gas, constipation, food intolerance, or digestive conditions. Persistent abdominal enlargement caused by fluid, known as ascites, is different and may occur with advanced liver disease. New or progressive swelling should be evaluated. (NIDDK)
Who should consider being checked?
People with type 2 diabetes, obesity, increased waist size, high blood pressure, abnormal cholesterol or triglycerides, or several metabolic risk factors should discuss their liver risk with a healthcare professional. (AASLD)
Final Thoughts
Fatty liver disease often develops without clear symptoms. Persistent fatigue, upper-right abdominal discomfort, or unexplained abnormal liver tests deserve attention, particularly in people with diabetes, excess abdominal weight, high blood pressure, or abnormal cholesterol.
Jaundice, abdominal or leg swelling, unusual bleeding, dark urine, pale stools, confusion, and vomiting blood are not minor warning signs. They may indicate advanced liver disease or another serious condition and require prompt medical assessment.
Early evaluation provides an opportunity to identify liver fat, assess possible scarring, manage metabolic risks, and begin sustainable lifestyle changes before complications develop.
Medical Disclaimer
This article is for general educational purposes only and does not provide a diagnosis. Many liver conditions cause few or no early symptoms, and the symptoms listed here may have causes unrelated to fatty liver disease. Seek personalised advice from a qualified healthcare professional and obtain urgent care for jaundice, confusion, vomiting blood, black stools, severe pain, or rapidly increasing abdominal swelling.
