Hepatitis primarily affects the liver. It is an inflammation of the liver that can be caused by various factors, including viral infections (such as hepatitis A, B, C, D, and E), alcohol consumption, and toxic substances. Symptoms might include jaundice, fatigue, abdominal pain, nausea, and liver dysfunction. Chronic hepatitis can lead to serious conditions, including cirrhosis and liver cancer. Preventative measures include vaccination (for some types), safe practices regarding food and water, and avoiding high-risk behaviors. Timely diagnosis and treatment are essential for effective management of hepatitis.