I notices a small lump on my arm which was red with like a pinprick sized white spot at the top of it a few days ago, I thought it was an insect bite. Whilst in the shower today it has now got a almost perfect red oval shaped circle covering it and is a little painful to the touch.
Hi, thanks for sharing your health concerns with Chat Doctor! If I were your treating Doctor for this case of PAINFUL arm nodule, I would come up with only one and one possibility and that is an infected sebaceous cyst turned into an abscess! I suggest you to go for an FNAC of the nodule for confirmation and to relieve your concerns; then revert to us! In the meantime please take antibiotics and cold/ice compress on it for temporary relief. Hope this answers your question. If you have additional questions or follow-up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.