Penisidus means: This is a very serious and rare infection which starts in your penis. Once your penis is infected it can spread to other parts of the body, such as the testicles. Itching, swelling, rapid hair growth, burning, redness and itchy patches around the testicle and penis can all be signs of infection. These symptoms should be reported to your doctor as soon as possible. (in Community Dictionary, added by Rafael Stewart)