AIH

Medical abbreviation · Gastroenterology

AIH stands for Autoimmune hepatitis, a gastroenterology abbreviation.

Chronic immune-mediated inflammation of the liver marked by raised aminotransferases, elevated IgG, autoantibodies such as ANA or anti-smooth muscle antibody, and interface hepatitis on biopsy. It responds well to corticosteroids and azathioprine, and untreated disease can progress to cirrhosis.

Example: Possible AIH: ALT 640, IgG 2,100 mg/dL, ASMA 1:160; liver biopsy before starting prednisone.

Usage notes

Type 1 AIH, the common form, affects mostly women at any age; type 2, with anti-LKM1 antibodies, mainly affects children. Overlap syndromes with PBC or PSC occur. The simplified International Autoimmune Hepatitis Group score helps establish the diagnosis. Many patients need lifelong maintenance therapy.

Related abbreviations

More gastroenterology abbreviations

• AH – Alcohol-associated hepatitis
• ALD – Alcohol-associated liver disease
• ALF – Acute liver failure
• AP – Acute pancreatitis
• APC – Argon plasma coagulation
• BE – Barrett's esophagus
• BRBPR – Bright red blood per rectum
• CD – Crohn's disease
• CHS – Cannabinoid hyperemesis syndrome
• CP – Chronic pancreatitis
• CRC – Colorectal cancer
• CTC – Computed tomographic colonography

See all 85 gastroenterology abbreviations →

Edited by the AbbreviationList.com team. Spotted an error or a missing meaning? Contact us.

This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.