My Dear Welcome to this site! I have assessed your description and think that problem is due to Urticaria. It is a condition which generally vanishes by itself but relief can be achieved by medication. It remains one of diseases where an exact cause may still defy investigations. You would be best placed by taking anti allergic medication like Levocetirizine as 5 mg per day. The dose can be later increased or you might add Cimetidine or ranitidine to this drug as that has been my experience to observe that the two work better when combined. For local use, I recommend hydro-cortisone cream to most of my patients on SOS basis and it helps them a lot. Sometimes steroids are given in this condition but we usually should reserve them for breathing or swallowing difficulties. I am sure we will soon hear from you about your recovery. Best wishes1