Warts consider the description of acromegaly, long sharp small particles on the penis may be acromegaly, but also may be the penis pearly papules, skin allergies, skin infections and other reasons. 1. acromegaly: a sexually transmitted disease caused by human papilloma virus infection, the early stage may lead to acromegaly on the penis, if there is previously unclean sex, there is a possibility of infection acromegaly. 2. Penile pearly papules: the etiology is unknown, may be related to local friction stimulation, etc., will cause the edge of the coronal groove appeared rice grain size transparent or translucent pimples, densely arranged, may also appear on the penis to grow sharp small particles of the phenomenon. 3. Skin allergy: the skin or mucous membrane on the penis in contact with external sensitizers or take certain foods, drugs and other factors, may cause allergic reactions, can also cause the penis to grow sharp small particles, may also be accompanied by itching and other symptoms. 4. Skin infections: For example, bacterial or fungal infections of the penile skin may cause an inflammatory reaction, which may also result in the appearance of acanthosis nodosus on the penis. There may be other causes of penile acanthosis, so you need to go to the hospital for examination first, to clarify the cause of the disease, and then follow the doctor’s instructions for treatment.