Hi friends, This is a 60 year man having large swelling of size 7cm x 5 cm behind neck for one year. Patient complained pain and tenderness over local area for 7 days and came to us. On examination punctum found in the centre of swelling and fluctuation positive. Infected sebaceous cyst diagnosis made. Incision and drainage surgery done under local anesthesia.all infected pultaceous material evacuated.Pus culture sent and antibiotics given as per sensitivity report. Patient improved with daily dressing.