Acute Diarrhea

Acute diarrhea is characterized by the sudden onset of increased stool frequency, liquidity, and urgency, typically lasting less than two weeks. It can result from infectious agents (viral, bacterial, or parasitic), food intolerances, or medications. Key clinical points include: 1) It can lead to dehydration, especially in vulnerable populations such as children and the elderly. 2) The condition may present with accompanying symptoms like abdominal pain, fever, and vomiting. 3) Diagnosis often involves a thorough history and physical examination, with stool tests if infectious causes are suspected. Typical use cases for this diagnosis code include emergency department visits for patients presenting with acute onset diarrhea, particularly when dehydration is evident or when there are associated severe symptoms. Etiologically, acute diarrhea can be caused by pathogens such as norovirus or rotavirus, while pathophysiologically, it involves alterations in intestinal absorption and secretion. Clinical presentation may vary, but the hallmark is a sudden increase in stool output, often accompanied by cramping and urgency.