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In page Autoimmune hepatitis:

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Generally, treatment is not required in asymptomatic patients with normal liver enzyme and antibody levels and liver biopsies that do not demonstrate inflammation because these patients are at a low risk of disease progression.[citation needed] In symptomatic individuals with evidence of interface hepatitis and necrosis on liver biopsy, it is recommended to offer treatment especially if the patient is young and can tolerate the side effects of medical therapy.[1][2] In addition, some authorities recommend treating every patient with a diagnosis of autoimmune hepatitis, even if they are asymptomatic for a long period of time.[3]