Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your complain itchy skin and bumps that keeps appearing and disappearing, fo which you are diagnosed with skin allergy can be due to CONTACT DERMATITIS that is an allergic reaction which occurs when skin comes in contact with certain agents that your body is allergic to like skin cosmetics, detergents, soaps, fragrances,leather, latex, poison ivy etc. -Another cause can be food allergy or side effect of medicines.. I would therefore suggest you to consult an Allergist and get evaluated and a thorough clinical evaluation and investigations like blood tests to rule out allergies and infection, micorscopic examination of scrapings from lesion can help.. As of now you can take anti allergics like benadryl for relieving itching and do cool compresses over bumps.. Once the cause is ruled out it will be treated accordingly.. - In case of Contact Dermatitis you will be advised anti allergics, topical steroid ointment application and also avoiding exposure to allergen when it is ruled out... In recurring conditions Immunotherapy will be advised to you.. Hope this information helps.. Thanks and regards. Dr.Honey Nandwani Arora.