<s>[INST] Hi,   I recently shave my genital area (about 2 months ago),  a week or so after I notice a small lump under the skin on my penis shaft......   Regretfully, I have tried to squeeze this, and it has becom larger and slightly tender......  It is not attached to the penis, and can be move around under the skin, therefore, I presume that it is a sebacious cyst.......   As it is now larger, has it become infected?  shall I just leave it alon for a while or do I need to see a doctor? [/INST] Hi ! Good morning. I am Chat Doctor answering your query. You possibly might be correct in presuming it to be an infected sebaceous cyst. Even though it might subside with anti-inflammatory and antibiotic 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. Wishing you an early recovery. Chat Doctor. </s>