Hepatitis A symptoms usually last less than 2 months for most people. However, 10% to 15% of those who get sick experience a prolonged or relapsing illness that can stretch up to 6 months. Unlike hepatitis B and C, hepatitis A never becomes a chronic infection, and almost everyone recovers fully.
From Exposure to First Symptoms
After you’re exposed to the hepatitis A virus, there’s a quiet window before anything feels wrong. This incubation period averages about 28 days, with a range of 15 to 50 days. During the later part of this window, you’re already contagious, even though you feel fine. That’s one reason hepatitis A spreads so effectively: people pass it along before they know they have it.
What the Acute Illness Feels Like
When symptoms arrive, they typically come on suddenly. Fatigue, nausea, stomach pain, loss of appetite, and a low-grade fever are common early signs. Within a few days, many people develop jaundice (yellowing of the skin and eyes), dark urine, and pale stools. These are signs the liver is inflamed and temporarily struggling to do its job.
For most people, the worst of it lasts a few weeks. You may feel wiped out and unable to eat normally for much of that time. The jaundice, if it appears, usually peaks and then gradually fades. Children under 6 often have no symptoms at all, while older adults tend to get hit harder.
The Relapsing Pattern
About 10% to 15% of symptomatic cases follow a less straightforward path. Instead of steady improvement, symptoms fade and then return weeks later. This relapsing form can drag the total illness out to 6 months. The second wave of symptoms generally looks similar to the first: fatigue, nausea, and sometimes jaundice again. It’s unsettling, but even relapsing cases resolve completely without lasting liver damage.
Full Recovery Timeline
Most people recover completely and have no lasting liver damage. The acute symptoms clear within that 2-month window for the majority, but feeling fully like yourself again can take a bit longer. Lingering fatigue is common even after jaundice and other obvious symptoms have resolved. Some people describe feeling low on energy for weeks after the main illness passes.
A very small proportion of people develop fulminant hepatitis, a form of acute liver failure. This is rare but serious and more likely in people who already have chronic liver disease or are older. For the vast majority, though, hepatitis A is a self-limiting infection that the body clears on its own.
When You Can Return to Work
Guidelines from health authorities vary slightly depending on your job. Food workers should stay home for at least two weeks after symptoms begin. If jaundice develops, food workers should wait at least one week after the jaundice appears before going back. For other occupations, the general principle is the same: you’re most contagious in the two weeks before symptoms start and during the first week of illness, so staying home during the symptomatic phase protects the people around you.
Immunity After Infection
One upside to getting through hepatitis A: your body builds lifelong immunity afterward. Once you’ve recovered, you won’t get it again. This is because your immune system produces antibodies that recognize the virus permanently.
Vaccination offers a similar result without the illness. A complete two-dose vaccine series has been shown to provide protection for at least 20 to 25 years in adults, and current evidence suggests it may last much longer. In children, protection has been documented for at least 14 to 20 years, with studies still ongoing. Because the virus never becomes chronic and natural infection gives permanent immunity, hepatitis A is one of the more straightforward viral infections in terms of long-term outlook.
Hepatitis A vs. Hepatitis B and C
The key distinction is that hepatitis A does not cause chronic liver disease. Hepatitis B can become a lifelong infection in about 5% of adults who contract it, and hepatitis C becomes chronic in more than half of cases. Both B and C can lead to cirrhosis and liver cancer over time. Hepatitis A, by contrast, is always acute. Your body clears the virus entirely, your liver heals, and the infection is over. That difference is why the answer to “how long does hep A last” has a definitive ceiling: 6 months at the very most, with the large majority of cases wrapping up well before that.