Most sexually acquired symptoms manifest themselves in or on the penis, or its immediate surroundings. Here are a few examples.
Discharge from the penis
Gonorrhea causes a thick white, yellow or green discharge from the tip of the penis.
Sore on the penis
In primary syphilis a hard, painless sore appears on the penis. This is usually accompanied by swelling of the surrounding glands.
Penis pain or discomfort
Pain or discomfort can sometimes be a sign of sexual infection.This may be associated with pain when passing urine. You may also have a discharge with this type of infection.
Ulcer Ulcers on the penis
These ulcers can be a symptom of syphilis. A syphilitic ulcer is called a chancroid. They begin as small painful pimples that break down to soft ragged ulcers. These ulcers bleed easily. The glands are also often swollen as well.
Specks on hair around the penis
Tiny black, greyish brown eggs on the pubic hair shafts may be a sign of infestation of lice.
Rash on and around the penis
A rash on or near the penis may be scabies. This infestation burrows beneath the skin causing irritation and itching.
Genital herpes causes red spots and blisters on the penis, as well as the scrotum, thigh and on the buttocks.
If you are experiencing any of these symptoms it is important that you go see a doctor for a diagnosis and appropriate treatment.