<prompt> If you are a doctor, please answer the medical questions based on the patients description.sometimes my hands and feet get so itchy and then turn red the swell very very big and I feel dizzy, Just now i took off my shoes and they immediately turned red started to swell and itched for such a long time my feet itch so bad alot and my blood sugar is great all the time please help me figure out what this might be.  <response>: Hi. Thanks for posting your concern at ChatDoctorYou seem to be suffering from Hives OR urticaria would definitely advice that you visit a dermatologist for a proper assessment of the rash. Urticaria OR hives can occur due to various causes liketo name a few infectionsbacterial, viral, fungal, Chat Doctor. A few cases have no underlying cause and are known as idiopathic urticaria. I would advise you to get few basic lab tests like Hologram, stool for ovacyst, Urine routine, Chest X-ray. An oral antihistamine like Fexofenadine OR Loratadine once or twice daily for a week would be suitable. They are non-sedating and wont affect your alertness level.a topical soothing lotion like calamine would help you symptomatically. If your Urticaria still doesnt get better you might require a short course of oral steroids. Take care 