A may also be short for hepatitis. Hepatitis is a kind of liver inflammation, which is often caused by virus infection, such as hepatitis B virus and hepatitis C virus. Symptoms of hepatitis include jaundice, nausea, vomiting and fatigue. Severe cases of hepatitis can also be life-threatening. People can prevent hepatitis through immunization, at the same time, they should stay away from the source of infection, maintain good hygiene habits and avoid contact with hepatitis-infected people.
A also plays an important role in drug therapy
A is also used in medicine for drug treatment. For example, antibiotics often contain a, which is a key component to limit the growth of bacteria. Class A drugs are also used to treat pain, fever and other symptoms, and can be used according to the doctor's advice. It should be noted that some people may be allergic to Class A drugs or have adverse reactions due to chemical reactions, liver or renal dysfunction. Therefore, before using such drugs, never make your own decisions, but consult a doctor.