Dear Doctor, My name is Sri. I am from India, working in Computer Sciences Corporation as a Manager. I have been suffering with an issue for a quiet long time now, for which I was not able to find a possible solution. I have been trying to contact many doctors in India but none proved to be helpful. So I have been searching online and came across the below link hoping this is the last go, I am trying to find out what is the problem with me. http://www. dermatology .ca/find_derm/profiles/index.html When ever I have fever, loose motions ( Diarrhea ) or any health issues, I usually go for medication to abort the process , but some times some medication results in itchy sensation on my lower lip initially and with in an hour, the lower lip starts swelling. And it remains for a few days until it gets dried up. Later it forms a dark patch and comes off as a dead skin. But in the end, my lip and the surroundings remain dark for ever. This happened a few times with me. And when ever I had this problem, I immediately consulted doctor and they tried medicating me with a tablet or a shot called evil which works as a allergy neutralizer it seems. But that never worked for me. A kind man once told me that this happens when there is sulpher in the medication I take. From then I started avoiding medicines with sulpher content. But recently a couple of days back this issue repeated and this time the medication did not have sulpher content. But still my lower lip swelled and I rushed to doctor and its the same result, the doctor was not able to help. I researched online and came to know , that this could possibly be : Anaphylaxis for which the only solution is to avoid the drugs which cause allergy. But I dont know what causes me allergy exactly. I request you to kindly give me an advise , which could be a temporary or a permanent solution, but kindly advise.. as this problem is causing me some serious paranoids. Your experience and research in the past would help this patient. Thank you very much in advance..