Dermatitis herpetiformis is associated with
Ulcerative colitis
Crohn's disease
Irritable bowel syndrome
Gluten sensitive enteropathy
Dermatitis herpetiformis (DH) is a chronic disease of the skin marked by groups of watery, itchy blisters that may resemble pimples or blisters.DH is a hereditary autoimmune gluten intolerance disease linked with celiac disease. If you have DH, you always have gluten intolerance Ref Harrison20th edition pg 1234
Fungal infections, Scabies, Pediculosis