The most common causes of hepatitis are viruses. Alcohol and drug abuse, chemical toxins, food contaminated with feces, and autoimmune disorders can also cause hepatitis. Hepatitis can also happen from a fatty liver related to obesity, diabetes, high cholesterol and other conditions. This can make your condition worse if you have viral hepatitis.
When a virus causes hepatitis, it is called viral hepatitis. The hepatitis viruses A, B, and C commonly cause viral hepatitis. Other viral infections can also cause hepatitis. Examples are the viruses that cause mononucleosis and chickenpox.
All the hepatic (liver) viruses have one thing in common. Once you have them they infect the liver and then cause inflammation (hepatitis). The viruses are spread in different ways. But all can affect your health over a long time. Possible complications include cirrhosis, liver cancer, and liver failure.
Hepatitis A
This disease is usually passed by swallowing food or water contaminated by stool carrying the hepatitis A virus. It is also passed by close household contact with another person who has this illness. Symptoms begin 2 to 6 weeks after exposure. There is a vaccine available to prevent hepatitis A. This type does not cause chronic liver disease.
Hepatitis B
This disease is passed by contact with the blood of a person who has the hepatitis B virus. This could be by sharing needles, syringes, or snorting straws. It can also be passed on through sexual contact. It is rarely passed by sharing razors or toothbrushes. Symptoms begin 2 to 6 months after exposure. There is a vaccine available to prevent hepatitis B. This type may go on to become a chronic liver disease.
Hepatitis C
This disease is often passed by contact with the blood of a person who has hepatitis C. This is most commonly from sharing needles or syringes. It is rare that hepatitis C is spread by sexual contact. It can be spread by sharing razors or toothbrushes with an infected person, getting a tattoo with a dirty needle, or sharing snorting straws. Living in the same house with someone who has the virus does not cause hepatitis C unless you share blood. Hepatitis C may go on to become a chronic liver disease.