<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi doctor, I have noticed some skin swelling and skin lesions on my body. Do you know what it could be?  <response>: Based on the symptoms you described, it could possibly be Hidradenitis suppurativa, a chronic skin condition that causes painful lumps under the skin in areas such as the armpits, groin, and buttocks. 