I Have A 20-year-old Friend With Me That Has No

I have a 20-year-old friend with me that has no insurance but he has developed a raised little bumps that have puss in them and some bleed, he gets them on his arms, hands, legs, penis, waste and rear-end...hes had them on and off for a month and a half and comes on with stress and sweating alot-work makes it flare up also?