Pimple like bumps on the penis that start small and become larger can occur due to simple folliculitis, irritation, blocked pores, fungal infection, or occasionally sexually transmitted infections, and because many conditions look similar, it is important not to squeeze or apply random creams as this may worsen swelling or infection. Hence, the safest approach is to keep the area clean and dry, temporarily avoid friction and shaving, and consult a dermatologist or urologist for a proper examination to confirm the cause and provide specific treatment.

Sexually transmitted diseases can cause a wide range of symptoms including genital sores or blisters, ulcers, warts, penile or vaginal discharge, burning or pain during urination, pelvic or lower abdominal pain, itching or irritation in the genital area, unusual vaginal bleeding, pain during intercourse, swollen lymph nodes in the groin, fever or flu like symptoms, skin rash on the body or palms and soles, and in some cases no symptoms at all, so anyone with possible exposure or concerns should consult a doctor for proper testing and treatment.