About a week ago, my penis started irritation. After two days, 6 small red bumps grew on my foreskin. I washed them with Dethol but it did not help. There grew some tiny similar bumps on the head of my penis. Later they stopped growing but still there was irritation. Some of them punctured during sleep but no blood came out of them, but transparent liquid and those bumps size became small and it appeared like it is healing. But, some of them healed but some became hard. And, yesterday two new bumps grew. My penis has become dry and bumps on the head have healed but some black mass(like the one that appears when we get hurt) has appeared on those spots. I have also developed some small amount of rashes on my upper thigh near the base. What could be the possible reason for this? How should I treat it?