Hepatitis C and cirrhosis are linked by time: chronic infection with the hepatitis C virus (HCV) slowly scars the liver, and over roughly 20–30 years that scarring can build into cirrhosis, liver failure, and liver cancer. The damage is usually silent until it's advanced. A short course of antiviral pills now cures more than 95% of people CDC and can stop or even reverse that trajectory.
most unaware
8–12 weeks of pills
| Item | Value |
|---|---|
| Acute reports | ~5,000/yr |
| Living with chronic HCV | ~2.4 million — most unaware |
| Cured by DAAs | >95% — 8–12 weeks of pills |
| Vaccine | none |
What hepatitis C and cirrhosis actually are
Hepatitis C is a liver disease caused by HCV, which spreads when blood from an infected person enters another person's bloodstream. The first six months after exposure are the acute phase. Most people who get infected don't clear the virus and go on to a chronic, lifelong infection. Unlike hepatitis B, hepatitis C is now curable.
Cirrhosis is the end stage of liver scarring. As the virus drives chronic inflammation, the liver lays down fibrous scar tissue (fibrosis) to patch the damage. Over years that scaffolding hardens and distorts the organ, choking off blood flow and replacing working liver cells. The progression runs in stages: mild fibrosis, advanced fibrosis, then cirrhosis. A scarred, nodular liver can no longer filter blood, make clotting proteins, or process toxins the way it should, and it becomes the soil where liver cancer takes root.
Symptoms — and the silent reality
Hepatitis C doesn't announce itself. Most infections cause no symptoms at all. Jaundice (yellowing of the skin and eyes from a backup of bilirubin the liver can't clear) shows up in only about 20–30% of acute cases, and nonspecific symptoms like fatigue, poor appetite, abdominal pain, and dark urine in roughly 10–20% CDC clinical. Chronic hepatitis C often causes no specific symptoms for 20 years or more, so a lot of liver damage accrues before anyone notices.
By the time cirrhosis develops, signs become harder to ignore: jaundice, fluid buildup in the abdomen (ascites) and legs, easy bruising and bleeding because the liver makes fewer clotting factors, and confusion or foggy thinking (hepatic encephalopathy, when toxins the liver should filter reach the brain). These are late warnings. The window to act is the decades before they appear. For a fuller breakdown of how this looks across the sexes, see hepatitis c symptoms in men and women.
How hepatitis C spreads
Hepatitis C is bloodborne. In the US the main route is injection drug use, including sharing needles, syringes, or any drug-preparation equipment. It can also pass from parent to baby at birth. When symptoms occur, the average time from exposure to onset is about 2–12 weeks, with a range out to 26 weeks.
There's no evidence it spreads through sharing utensils, hugging, kissing, holding hands, coughing, sneezing, or food and water. Sexual transmission is possible but less efficient than for many other STIs, and it's most relevant in higher-risk sex involving blood contact. If you're weighing your own risk to a partner, is it possible to give hepatitis c to someone else? walks through the specifics.
How hepatitis C is tested
Testing is a two-step blood process. It starts with an HCV antibody test; if that's positive, the lab automatically runs a nucleic acid test (NAT) for HCV RNA to confirm a current, active infection CDC testing. Antibodies show you've been exposed at some point, while RNA shows the virus is in your blood right now.
CDC recommends screening all adults aged 18 and older at least once, and screening pregnant people each pregnancy. The USPSTF gives a Grade B recommendation for one-time screening in adults aged 18–79 USPSTF. In practice this is a routine blood draw with results usually back in a few days, and it's free or low-cost at health departments, Planned Parenthood, and Title X clinics. If you've had a recent exposure, when to test after exposure explains the timing, and you can get tested for a full panel. See the full how-to in our hepatitis c test guide.
Treatment — and how cure changes the cirrhosis trajectory
Hepatitis C is now curable for almost everyone. An 8–12-week course of oral direct-acting antiviral (DAA) pills cures more than 95% of people, and that cure holds in over 99% of those followed five years WHO. The simplified regimens are glecaprevir/pibrentasvir for 8 weeks, or sofosbuvir/velpatasvir for 12 weeks. Specialist guidance recommends treating essentially everyone with HCV, not only advanced cases AASLD/IDSA.
Where you are on the fibrosis-to-cirrhosis timeline shapes what cure buys you. Caught before significant scarring, cure stops the clock; the liver isn't damaged and your long-term risk drops back toward normal. Caught at advanced fibrosis, cure halts progression and the liver can recover a meaningful amount of function over time. Caught at cirrhosis, cure still lowers the risk of liver failure and cancer, but the scarring may be permanent, so you'll need ongoing monitoring for liver cancer even after the virus is gone. The earlier the cure, the more of your liver you keep.
| Stage at cure | What cure does | What still matters after |
|---|---|---|
| Mild fibrosis | Stops disease before meaningful scarring | Avoid reinfection; routine care |
| Advanced fibrosis | Halts progression; partial liver recovery | Periodic liver follow-up |
| Cirrhosis | Lowers liver failure and cancer risk | Lifelong liver cancer surveillance |
A few practical notes on treatment. It's a defined course, so finish every pill even once you feel fine, because stopping early risks failure and resistance. Cure doesn't grant immunity. Hepatitis C antibodies stay positive for life, so reinfection is possible, and only an RNA (viral) test can detect it; annual retesting is advised for anyone with ongoing risk. A diagnosis here is common and treatable. Clinics handle it daily, and it says nothing about you as a person.
Complications if hepatitis C goes untreated
Left untreated, chronic hepatitis C is one of the leading drivers of serious liver disease in the US. The progression, in order of severity:
- Cirrhosis — extensive, irreversible scarring that hardens the liver and chokes off its blood supply, the turning point where complications cluster.
- Liver failure (decompensation) — the scarred liver can no longer keep up, leading to fluid buildup, internal bleeding from swollen veins, and confusion from unfiltered toxins.
- Hepatocellular carcinoma (liver cancer) — cirrhosis dramatically raises the risk of primary liver cancer, which often grows silently until late.
- Death — from liver failure or cancer when the disease isn't caught and treated in time.
This is preventable rather than inevitable because of the long, quiet runway. The same 20-plus years that let damage accumulate unnoticed are 20-plus years in which a single test and a short course of pills can change the outcome.
How to prevent hepatitis C
There's no vaccine for hepatitis C, so prevention is about avoiding blood contact CDC prevention. The core steps:
- Don't share needles, syringes, or any drug-preparation equipment.
- Don't share personal items that can carry blood, like razors or toothbrushes.
- Use syringe services programs if you inject drugs — they provide clean supplies and testing.
- Use condoms during higher-risk sex to reduce transmission, and use them every time for the sexually transmitted infections in general.
- Get screened at least once as recommended. Routine testing is how you catch an infection that has no symptoms.
When to see a clinician
See a clinician for one-time screening if you've never been tested as an adult, every pregnancy, and after any possible blood exposure such as shared needles. Get checked sooner if you have unexplained fatigue, jaundice, dark urine, or abdominal pain. If you've been treated and cured but still have risk, ask about annual RNA retesting. Roughly 2.4 million Americans live with chronic HCV, and most don't know it CDC surveillance. The only way to find out is to test. You can compare testing providers to find an option that fits.