Gastroenteritis describes a group of conditions usually caused by infection with a microorganism (viral or bacterial) or ingestion of chemical toxins. Gatroenteritis usually consists of mild to severe diarrhea that may be accompanied by loss of appetite, nausea, vomiting, cramps, and discomfort in the abdomen. Although gastroenteritis usually is not serious in a healthy adult, causing only discomfort and inconvenience, it can cause life-threatening dehydration and electrolyte imbalance in the very ill, the very young, and the very old.

The links below will take you to additional detailed information about Gastroenteritis.

Dorland's Medical Dictionary for Healthcare Consumers
Use the same medical dictionary that healthcare professionals have relied on for years. You'll find advanced definitions for over 115,000 medical terms.

The Merck Manual—Home Edition
Access the essential health reference guide The Merck Manual—Home Edition. Discover in-depth information on all of your health and medical concerns.