Hepatitis primarily affects the liver. It is an inflammatory condition of the liver, typically caused by viral infections, excessive alcohol consumption, certain medications, or autoimmune diseases. There are several types of hepatitis viruses, including hepatitis A, B, C, D, and E, each varying in transmission routes and severity. Hepatitis can lead to symptoms like fatigue, jaundice, abdominal pain, and in chronic cases, it can result in serious complications such as liver cirrhosis or liver cancer if not properly managed. Regular screenings and vaccinations can help prevent some types of hepatitis.