This Celiac.com FAQ on celiac disease will guide you to all of the basic information you will need to know about the disease, its diagnosis, testing methods, a gluten-free diet, etc.
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What are the major symptoms of celiac disease?
Celiac Disease Symptoms
What testing is available for celiac disease? - list blood tests, endo with biopsy, genetic test and enterolab (not diagnostic)
Celiac Disease Screening
Interpretation of Celiac Disease Blood Test Results
Can I be tested even though I am eating gluten free?
How long must gluten be taken for the serological tests to be meaningful?
The Gluten-Free Diet 101 - A Beginner's Guide to Going Gluten-Free
Is celiac inherited? Should my children be tested?
Ten Facts About Celiac Disease Genetic Testing
Is there a link between celiac and other autoimmune diseases?
Celiac Disease Research: Associated Diseases and Disorders
Is there a list of gluten foods to avoid?
Unsafe Gluten-Free Food List (Unsafe Ingredients)
Is there a list of gluten free foods?
Safe Gluten-Free Food List (Safe Ingredients)
Gluten-Free Alcoholic Beverages
Distilled Spirits (Grain Alcohols) and Vinegar: Are they Gluten-Free?
Where does gluten hide?
Additional Things to Beware of to Maintain a 100% Gluten-Free Diet
Where can I buy gluten-free stuff?
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I'm a naturalist -- I don't use drugs, creams, etc. I do, however, scratch** the rash until I'm almost bleeding and then dump isopropyl alcohol in it -- that relieves the itch for quite some time. (Stings at first though.) I get the rashes on my legs.
ANYWAY, I have found that a gluten-free diet is the only (or best) approach -- it's certainly the most natural, in my opinion. It took six months before I felt I was cleansed of gluten. I went nine months (or more) without a rash. Then, I mistakenly ate some soup with barley in it. Got the rash. I let it run its course while getting back to & staying on a gluten-free diet.
My best advice is just to stay on a gluten-free diet. Be strong, brave. You can do it!
** I should clarify that when my rashes start itching, I can't help but scratch (excessively). I am not suggesting scratching yourself (with or without cause) as a means to an end. Don't scratch if you can.
Nicotinamide helps a great deal. Nicotinamide is a form of Vitamin B3, also called Niacin. Many new Celiacs have trouble absorbing sufficient vitamins and minerals because of intestinal damage. Malabsorption causes malnutrition. Deficiencies of the B Complex vitamins, especially niacin, and vitamins A and D often manifest as skin rashes and exacerbate DH. Recent research has found that treatment with nicotinamide and tetracycline effectively treats DH. Ask your doctor to check for vitamin deficiencies if you haven't already. Also dapsone use may cause iron, B12, and folate deficiencies which may lead to anemia. These should be monitored as well.
Hope this helps.