What is hepatitis from?

Depends on type: Hepatitis means inflammation of the liver. Viral hepatitis is caused by a few specific viruses, types a, b, c, d, e, f (not confirmed), and g. The most common hepatitis viruses are types a, b, and c. A, by oral secretions and stool. B, sexual conduct, blood (tattooing, piercing, transfusions). C, sharing needles, transfusions. D, same as b. Up to 1/3 of cases have unknown source.

Variety of reasons: Hepatitis simply means inflammation of the liver and is reflected by elevated liver function tests (ast and alt) - it can be the result of many things - the most common are: alcohol, fatty liver, viral hepatitis (hepatitis b and hepatitis c), autoimmune hepatitis, and drug induced hepatitis. Treatment varies by etiology, so it is critical to determine the cause - see you physician to have tests.