How common is dermatitis herpetiformis?

How common is dermatitis herpetiformis?

Dermatitis herpetiformis is most common in people of northern European heritage. One statistic states that up to 75 per 100,000 people in northern Europe have it. Dermatitis herpetiformis affects 10% to 25% of celiac disease patients. It is rare in children and in people of African American or Asian descent.