Autoimmune hepatitis (AIH) refers to a chronic liver disease that occurs when the immune system mistakenly attacks liver cells. AIH can lead to inflammation and permanent liver damage if left untreated. There are a number of synonyms for AIH, including autoimmune chronic active hepatitis, classical autoimmune hepatitis, and lupoid hepatitis. AIH is often misdiagnosed as viral hepatitis, alcoholic hepatitis, or non-alcoholic steatohepatitis. Symptoms of AIH can include fatigue, joint pain, fever, and jaundice. Treatment typically involves corticosteroids and immunosuppressants to reduce inflammation and slow down the immune system's attack on the liver. Regular monitoring and follow-up care are essential for managing AIH.