Rashes, blisters and itching can be from a common conditions such as eczema, psoriasis, or allergic contact dermatitis.  However, your condition could be a more rare condition such as Dermatitis Herpetiformis associated with Gluten, lupus, vasculitis or malignant T cell lymphoma. These rare diseases are best diagnosed by a board certified dermatologist who has the expertise and experience to know when and how to test for them. Specialized blood tests and skin biopsies are used. If your skin condition is not resolving, the diagnosis must first be reconsidered and more extensive treatment options discussed.  Communication is the most important part of medicine and we will work with our patients so that they can fully understand how to control of their skin disease.