Hi. Thanks for your query. The history is suggestive of a condition called erysipelas, wherein you get the skin changes as you have described. Precaution you have to take:: Do not scratch, as the secretions are highly contagious. You will get affected in the new areas wherever you will touch them. You have to take a course of suitable antibiotic under the supervision of the Doctor. You can apply liquid Povidone iodine to the areas affected.