<s>[INST] hi,myself deepak 35 yrs,due to infection after burn a cyst has developed and gradually increasing under my armpit,due to this my ulnar nerve is uneasy,itching and pins,needles feeling is there and in hand also.what should i do.now it is around 1.5 cm in dia. [/INST] Hi ! Good evening. I am Chat Doctor answering your query. This could be an abnormal scar otherwise known as keloid, which is causing the problem. Even though it needs a physical examination to diagnose it with certainty, I would suggest you not to scratch it though it might itch to prevent its spread. For the present you may go for an anti-inflammatory, and an anti-allergic Chat Doctor. I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing Chat Doctor to clear doubts on your health problems. I wish you an early recovery. Chat Doctor. </s>