What are the main causes of hepatitis?

The most common etiology of hepatitis incidence is infection, which is the biggest harm of viral hepatitis, clinical data show that patients with viral hepatitis, many of them will eventually translate into liver disease, it is often because the treatment is not timely, or long-term recurrent transformation and form. Following the introduction of the incidence of hepatitis:
The main causes of hepatitis are:

1. viral infection: caused by a variety of hepatitis viruses. It has the characteristics of strong infectivity, complicated transmission route, wide epidemic range and high incidence.
2. alcohol abuse: alcohol can cause hepatitis. Mainly due to the direct toxicity of alcohol (ethanol) and its metabolite acetaldehyde to liver cells.
3. drugs or chemical poisons: many drugs and chemical poisons can cause liver damage, drug-induced hepatitis or toxic hepatitis. Such as bisatin, methyldopa, tetracycline and arsenic and mercury, carbon tetrachloride.
4. other: many systemic infectious diseases can invade the liver, such as EB virus, bacterial infectious diseases such as typhoid, can cause elevation of serum transaminase or other abnormal liver function.
Hepatitis is now living in a very common disease, and also can be said to be one of the greatest damage to liver disease, it is best for hepatitis prevention, hepatitis a high-risk group in the removal of the first point, is the main disease hepatitis patient group.