<s>[INST] Hi I have a bumpy pink rash that appeared on the right side of my abdomen that stings sometimes spontaneously without me even touching it. It is itchy around it but not on it. So far its been over a week and a few other rashes have appeared throughout the abdomen. But the first one has bumps which are beginning to turn black. What do I have and what can I do about it? [/INST] Hello, Thanks for the query to H. C. M.  Forum Red bump with stings with mild pain that too from one week are suggestive of Herpes Zoster or simplex. This is contagious and infectious disease. No w you mentioned that they ( bumps) are turning into black i.e. one more  step that indicates that it is herpes. As this is in localized area, same thing happens in herpes. If it is only in one half of  abdomen than sure herpes. 2 nd remote chance is that it may be Chicken pox ( it spread all over body but more over abdomen and thorax) Only  physical examination can reveal , what is this. Good luck. Dr. HET </s>