If you have hepatitis, your liver becomes inflamed, and depending on the type, the infection either clears on its own within weeks or persists for years and gradually damages your liver. The word “hepatitis” covers several different viruses, and what happens to you depends heavily on which one you have, whether your body fights it off, and how early it’s caught. Some people recover completely without treatment. Others, if left untreated, face serious complications including permanent scarring of the liver, liver failure, and liver cancer.
The Types and How You Get Them
There are five main hepatitis viruses (A through E), but the three you’re most likely to encounter are A, B, and C. Each spreads differently and behaves differently once inside your body.
Hepatitis A spreads through contaminated food or water, or close contact with someone who’s infected. It causes a short-term illness and doesn’t become chronic. Most people recover fully within a few weeks to months.
Hepatitis B spreads through blood, sexual contact, and from mother to baby during birth. It can also spread through sharing razors, toothbrushes, or contact with open sores. In adults, the infection usually clears on its own, but a small percentage of people develop a chronic infection that lasts for life. Infants and young children who contract it are much more likely to become chronically infected.
Hepatitis C spreads primarily through blood, most commonly by sharing needles or other drug injection equipment. Less commonly, it can spread through unregulated tattooing, sexual contact, or from mother to baby. Unlike hepatitis B, hepatitis C frequently becomes chronic. Without treatment, more than half of people who contract it will carry the virus long-term.
What the Early Symptoms Feel Like
Many people with hepatitis don’t feel sick at first. The virus can be in your body for weeks before anything shows up. For hepatitis A, symptoms typically appear 2 to 7 weeks after exposure. Hepatitis B has a longer incubation period, averaging around 90 days. Hepatitis C can take anywhere from 2 weeks to 6 months to produce noticeable symptoms, and many people never develop symptoms at all during the acute phase.
When symptoms do appear, they tend to look similar across all types:
- Fatigue that doesn’t improve with rest
- Loss of appetite, nausea, stomach pain, or vomiting
- Fever
- Joint pain
- Dark urine and pale or clay-colored stools
- Yellowing of the skin and eyes (jaundice)
Jaundice happens because your inflamed liver can’t properly process bilirubin, a yellow pigment produced when old red blood cells break down. When bilirubin builds up in your blood, it tints your skin and the whites of your eyes yellow and turns your urine dark. This is one of the most recognizable signs that something is wrong with your liver.
What Happens Inside Your Liver
Hepatitis viruses don’t always destroy liver cells directly. In many cases, it’s your own immune system that causes the damage. When your body detects infected liver cells, it sends immune cells to attack and kill them. This immune response creates inflammation, and while it’s necessary to fight the virus, it also harms healthy tissue in the process. Chronic infection keeps this cycle going for years, with your immune system continuously attacking liver cells and your liver continuously trying to repair itself.
Each round of damage and repair leaves behind scar tissue. The virus also triggers oxidative stress, a process where harmful molecules accumulate and damage the DNA and internal structures of liver cells. Viral proteins can build up inside liver cells, stressing their internal machinery and pushing them toward self-destruction. Over time, this ongoing assault reshapes the liver from soft, functioning tissue into something increasingly stiff and scarred.
How Chronic Hepatitis Progresses
Chronic hepatitis B and C follow a similar path if left untreated. The liver accumulates scar tissue in stages, progressing from mild scarring (early fibrosis) through moderate and severe fibrosis, and eventually reaching cirrhosis, where so much of the liver is scarred that it can no longer function properly. This progression typically takes years or even decades, but it varies widely. Some people live with chronic hepatitis for 20 or 30 years before reaching cirrhosis. Others get there faster, especially if other factors accelerate the damage.
Once cirrhosis develops, the consequences become serious. Your liver can no longer filter toxins efficiently, produce enough clotting factors, or regulate fluid balance. This can lead to fluid buildup in the abdomen, confusion caused by toxin accumulation in the brain, internal bleeding from swollen veins in the esophagus, and eventually liver failure. People with cirrhosis from chronic hepatitis also face an elevated annual risk of developing liver cancer, estimated at roughly 2 to 4% per year.
Effects Beyond the Liver
Chronic hepatitis, particularly hepatitis C, doesn’t just affect your liver. The virus triggers immune responses throughout the body that can cause a surprisingly wide range of problems in other organs.
Joint pain is the most common complaint outside the liver, reported in 40 to 80% of people with chronic hepatitis C. It typically affects the knees and hands symmetrically and doesn’t cause joint deformity. Dry mouth and dry eyes affect 20 to 30% of people with chronic infection. Skin problems can include purplish spots (purpura), chronic ulcers, and poor circulation in the fingers and toes.
Chronic hepatitis C also increases the risk of type 2 diabetes and insulin resistance, kidney disease from immune complexes depositing in the kidneys, and cardiovascular problems including stroke and coronary artery disease, even after accounting for traditional risk factors like high blood pressure and cholesterol. Fatigue, depression, and cognitive impairment are common and can significantly reduce quality of life, sometimes even before liver damage becomes advanced.
How Hepatitis Is Detected
Hepatitis is diagnosed through blood tests. Your doctor will check for antibodies to the virus (which show whether you’ve been exposed) and for the virus itself (which confirms an active infection). Liver enzyme levels in your blood also reveal how much inflammation is happening. Two enzymes in particular, ALT and AST, leak out of damaged liver cells into the bloodstream. Normal ALT levels range from about 4 to 36 IU/L. In active hepatitis, these values can rise to 5 or even 15 times the upper limit of normal, and in severe cases they can climb into the thousands.
If chronic hepatitis is confirmed, your doctor will assess how much scarring your liver has. This used to require a needle biopsy, but today it’s often done with specialized imaging or a blood-based scoring system that estimates fibrosis stage without an invasive procedure.
Treatment and Cure Rates
What treatment looks like depends entirely on which hepatitis you have. Hepatitis A requires no specific treatment. Your body clears it on its own, and once it’s gone, you’re immune for life.
Hepatitis B treatment focuses on suppressing the virus in people with chronic infection. Antiviral medications can keep the virus at very low levels and dramatically slow liver damage, but a complete cure is rare. Most people with chronic hepatitis B take medication long-term.
Hepatitis C, on the other hand, is now curable. Modern antiviral treatments cure more than 95% of people in just 8 to 12 weeks of oral medication. The treatment is well-tolerated, with far fewer side effects than the older interferon-based regimens that were standard a decade ago. After finishing treatment, you’re tested again at 12 weeks. If no virus is detected in your blood at that point, you’re considered cured. The liver can even recover some of its scarring after the virus is eliminated, though advanced cirrhosis is only partially reversible.
Alcohol and Diet With Hepatitis
Alcohol is one of the strongest accelerators of liver damage in someone with hepatitis. It blocks the liver’s ability to break down fats, leading to fat accumulation that compounds the injury already being caused by the virus. Continued drinking while infected dramatically speeds the progression from early scarring to cirrhosis. Complete avoidance of alcohol is considered the single most important lifestyle change for anyone with chronic hepatitis.
Nutritionally, maintaining adequate protein and calorie intake matters more than most people expect. Chronic liver disease increases your body’s energy demands, and poor nutrition worsens muscle loss, which is a common complication of advancing liver damage. A balanced diet with sufficient protein, limited processed foods, and minimal added salt (to prevent fluid retention) supports liver function and helps maintain the muscle mass that chronic hepatitis tends to erode.