Hi. Thanks for your query. Noted your history of chronic hives, starts out as a feeling of heat and swelling in hands and feet, welts on hands, itching on tops of feet and hands, ear get hot and itchy, also for the scalp, they go away in about 20 minutes, return and then have redness and itchy in various parts of body. You have been put on allegra and other medicines. This is also called as a case of severe allergic dermatitis. In some cases the cause is not known and hence the treatment can be empirical. For example, you are given anti-worm treatment, a course of medicines like Banocid forte under the prescription of your Doctor. Continue the Medicines and ask for oral course of steroids. Also needed is the keen observation of you, the friends and the family about the atmosphere you are in, the foods and the beverages you take and to notice the cause and to stop exposure to such things forever. Prevention is the best medicine for these.