Celiac disease (gluten-sensitive enteropathy), sometimes called sprue or coeliac, is an immune reaction to eating gluten, a protein found in wheat, barley and rye.
If you have celiac disease, eating gluten triggers an immune response in your small intestine. Over time, this reaction damages your small intestine's lining and prevents absorption of some nutrients (malabsorption). The intestinal damage often causes diarrhea, fatigue, weight loss, bloating and anemia, and can lead to serious complications.
In children, malabsorption can affect growth and development, in addition to the symptoms seen in adults.
There's no cure for celiac disease — but for most people, following a strict gluten-free diet can help manage symptoms and promote intestinal healing.
Celiac disease care at Mayo Clinic