How to i cure a irritation on the head of my penis and a itch like bump on the shaft of my penis i just want them gone ?

Possible std: Irritation can be caused by the simple things like yeast or more worrisome a sexually transmitted disease. If you are or have in the past been sexually active( with the simplest definition being your body part meets someone else's body part) you are potentially exposed to things like hpv ( genital wart or cervical cancer related), chlamydia, gonorrhea, syphilis, etc. Seek evaluation.