Global estimates of the prevalence of dermatitis herpetiformis range from 1 in 400 to 1 in 10,000 people. Individuals of Northern European descent are most likely to be affected and estimates of the rates of DH in British and Finnish populations range from 30 in 100,000 to 75 in 100,000 people, respectively. The annual incidence rate of DH in these populations range from 0.8 to 2.7 per 100,000. People of all ages may be affected, although the mean age at diagnosis varies between 30–40 years of age. There is a slight male predominance in DH for unknown reasons and it is associated with<unk><unk>  and the haplotypes HLA-DQ2 and, less commonly, HLA-DQ8.
symptom of Coeliac disease
symptoms of Helicobacter pylori
symptom of Tropical sprue
symptoms of Crohn's disease
symptom of Irritable bowel syndrome
symptom of Stomach cancer
symptom of Helicobacter pylori
symptom of Gastroesophageal reflux disease