Spots/bumps on your penis?
It is probably harmless.
# Hair follicles and sebaceous (sweat) glands: these are a normal part of the skin’s anatomy and are commonly found on the penile shaft, particularly on the ventral surface (underside). They may be visible as small nodules or might only be felt as small lumps in the skin. They will have a hair arising from them that reveals their true nature. They are quite normal.
# Pearly penile papules: multiple, small (about 1-3mm) papules running around the circumference of the crown of the glans penis. They typically develop in men aged 20 to 40, and around 10 per cent of all men are affected. They may be mistaken for warts, are not infectious and require no treatment.
# Fordyce spots: small (1-5mm) bright red or purple papules that can appear on the glans, shaft or scrotum and usually affect younger men. They may occur as a solitary lesion, but frequently appear in crops of 50 to 100. They are painless and not itchy, but may cause embarrassment because of their appearance, or a fear that they might be sexually transmitted. They are abnormally dilated blood vessels, covered by thickened skin. They may bleed if injured or even during intercourse. They are not infectious and their cause is unknown. Although a number of approaches have been tried, there is no simple, reliable treatment to remove them. Troublesome bleeding spots can be sealed with a device that uses a small electric current (electrocautery).
But, you should check out by going to a doctor if it could be HPV (warts) or herpes virus. Penis cancer, allthough very rare, is also a possibility.
More info that can be useful:
# Molluscum contagiosum: a common, benign, infectious viral disease affecting the skin and mucous membranes. It is a common skin condition in childhood when it is transmitted through ordinary peer contact. In adults it may be sexually transmitted and this is probably the commonest cause of penile molluscum in adult men. It appears as multiple, small, dome-shaped papules, often with a central depression or plug. A curd-like discharge can be squeezed from them. It may disappear without treatment, but freezing or cautery will usually get rid of it. Molluscum contagiosum is a marker for ‘unsafe’ sexual practices in adulthood and those affected should be screened for HIV
# Balanitis and posthitis: balanitis is an inflammatory condition of the glans penis. Posthitis is an inflammatory condition of the foreskin. Symptoms include local irritation, burning and a red rash. Sometimes the skin appears to be peeling off as if scalded. Bacteria and yeasts such as candida can cause it. It is more common in older men and those with diabetes. Balanitis is infectious and may be sexually transmitted. It can be treated with appropriate antimicrobial creams.
It is very normal to freak out when you discover spots and bumps on penis. Get a doctor to diagnoze your unit at soon as possible, but it is probably nothing harmful.