# Chronic Hepatitis C
What is it
Chronic hepatitis C is a long-term infection of the liver with the hepatitis C virus (HCV). The virus spreads mainly through blood-to-blood contact. In approximately 15 to 45 percent of people who become infected, the virus disappears on its own; in others, it continues to multiply in liver cells. This leads to persistent inflammation and damage to liver tissue.
The disease usually develops without clear symptoms in the first years or even decades. Only when the liver is severely damaged do noticeable complaints emerge. This is why chronic hepatitis C can remain undetected for a long time.
Causes
Chronic hepatitis C develops when the hepatitis C virus is not cleared by the immune system after infection. The virus can then settle in the liver for years.
Infection occurs through direct contact with infected blood. This can happen through:
- Injection drug use (especially when needles are shared)
- Medical procedures with insufficient sterilization
- Blood transfusions (especially in countries with less strict screening)
- In rare cases through sexual contact, especially in people with wounds or skin and mucous membrane abnormalities
Not everyone who becomes infected develops chronic hepatitis C. It depends on factors such as age, gender, and immune function whether the body can fight off the virus.
How the disease progresses
Chronic hepatitis C usually progresses in stages, although the pace varies greatly from person to person.
**First stage: silence without symptoms**
After infection, years or decades can pass without noticeable symptoms. The virus multiplies in the liver, slowly leading to inflammation and scarring (fibrosis). Many people do not know they are infected.
**Second stage: progressive fibrosis**
As the inflammation continues, liver scar tissue forms. The liver tries to rid itself of damaged tissue, but the new tissue is less flexible and functional. This process is rapid in some, very slow in others. Genetic factors, age, and whether someone has other infections (for example hepatitis B or HIV) play a role.
**Third stage: cirrhosis**
When much liver tissue is replaced by scars, this is called cirrhosis. The liver becomes stiff and can no longer perform its functions well. This leads to a cascade of problems: blood congestion in the portal vein, fluid accumulation in abdomen and legs, confusion due to buildup of toxins, and increased risk of liver cancer.
**After treatment with modern medications (DAAs)**
With directly acting antiviral medications, more than 95 percent of patients can be cured. The virus then disappears from the body. This stops the progressive damage. However, existing scar tissue cannot completely disappear, so those who already have cirrhosis remain at risk of complications.
Symptoms by phase
**Early stages (without cirrhosis)**
Most people have no symptoms for a long time. Those who do experience them may report:
- Fatigue
- Muscle pain and joint pain
- Headache
- Concentration difficulties
These symptoms are vague and easily confused with other conditions.
**Advanced stages (cirrhosis)**
As the liver is severely damaged, the following can occur:
- Severe fatigue and weakness
- Jaundice (yellow discoloration of skin and eyes)
- Dark urine and pale stools
- Itching
- Swollen abdomen (ascites) due to fluid accumulation
- Swollen legs and feet
- Bruising and nosebleeds (because the liver does not regulate blood clotting well)
- Confusion or difficulty thinking clearly (hepatic encephalopathy)
- Vomiting blood (from varices: dilated veins)
What it means for daily life
**For people without severe fibrosis**
If the liver is still minimally damaged, daily life can continue almost normally. Many people do not know they are infected for a long time. However, it is important:
- Do not share blood with others (for example, no shared toothbrush or razor if blood contact can occur)
- Caution during sexual contact
- Do not donate organs or tissues
**For people with advanced disease (cirrhosis)**
This requires clearly more adjustments:
- Fatigue can limit work or hobbies
- Alcohol use is usually not advisable (more stress on the liver)
- Certain diet may be necessary (for example, less salt with fluid accumulation)
- Regular check-ups and possibly medication use to prevent complications
- Caution with certain medicines, because the liver no longer processes them well
**Psychological impact**
A diagnosis of chronic hepatitis C can raise concerns about prognosis and infecting others. Support from family, friends or social services can help.
Outlook
**With treatment**
Modern treatments (direct-acting antivirals, DAAs) cure chronic hepatitis C in more than 95 percent of cases. The virus disappears, which stops further damage. This is a significant advance over older therapies.
After successful treatment, the virus disappears from the blood. The body's immune system recovers. In people without cirrhosis, the outlook is excellent.
In people who already have cirrhosis, treatment stops further damage, but existing scarring remains. This group should exercise caution and be regularly screened for liver cancer.
**Without treatment**
Without therapy, chronic hepatitis C progresses to cirrhosis in many people within 20 to 30 years, but this varies greatly. Some remain relatively stable for decades; others deteriorate faster. Once cirrhosis is present, the risk of liver failure and hepatocellular carcinoma (liver cancer) increases.
**Note**
Statistical data apply to groups, not to individuals. The rate of progression and response to treatment differ from person to person.
Frequently asked questions
**Can hepatitis C be cured?**
Yes, with current antiviral medicines (DAAs) the virus is cured from the body in more than 95 percent of patients. This happened much less often with older therapies. After successful treatment, the virus is no longer detectable in the blood. However, reinfection is theoretically possible with renewed exposure risks.
**How often do I need to be checked?**
This depends on your stage of liver disease. Someone without fibrosis needs less frequent check-ups than someone with cirrhosis. This will be determined in consultation with your doctor. After successful treatment, the frequency of check-ups usually decreases.
**Can I pass hepatitis C to my partner?**
Hepatitis C does not spread through saliva, food or normal daily contact. The risk through sexual contact is small, especially without visible bleeding or wounds. For partners, regular screening is advisable. Drinking glasses, toothbrush and razor should not be shared.
**What if I also have other liver problems?**
If you also have, for example, hepatitis B infection, overweight, heavy alcohol use or HIV, liver disease can progress faster. This makes treatment and monitoring even more important. Your doctor will take this into account in the treatment plan.
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_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._