In the Clinic is a monthly feature in Annals of Internal Medicine introduced in January 2007 that focuses on practical management of patients with common clinical conditions. It offers evidence-based answers to frequently asked questions about screening, prevention, diagnosis, therapy, and patient education and provides physicians with tools to improve the quality of care.
Nonalcoholic Fatty Liver Disease
Nonalcoholic fatty liver disease (NAFLD) is the leading cause of chronic liver disease. Most cases are diagnosed incidentally in the primary care or hospital setting on the basis of elevated liver enzyme levels or hepatic steatosis on imaging. NAFLD encompasses a wide spectrum: The vast majority of patients have nonprogressive nonalcoholic fatty liver, and a few of those develop progressive liver injury, inflammation, and fibrosis, a condition termed nonalcoholic steatohepatitis. Cardiovascular disease is the leading cause of death in patients with nonalcoholic fatty liver disease. Persons with nonalcoholic steatohepatitis have increased liver-related mortality. In the absence of regulatory agency–approved drugs, lifestyle modification and weight loss remain the cornerstones of NAFLD therapy.
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Clostridioides difficile Infection
Clostridioides difficile (formerly Clostridium difficile) infection is the most frequently identified health care–associated infection in the United States. C difficile has also emerged as a cause of community-associated diarrhea, resulting in increased incidence of community-associated infection. Clinical illness ranges in severity from mild diarrhea to fulminant colitis and death. Appropriate management of infection requires understanding of the various diagnostic assays and therapeutic options as well as relevant measures to infection prevention. This article provides updated recommendations regarding the prevention, diagnosis, and treatment of incident and recurrent C difficile infection.
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