The proliferations on the foreskin, mainly including pearl rash and warts and so on. 1. Pearl rash: it is a white or yellow proliferation that appears around the coronal groove of the penis, pearly, with a smooth and colorful surface; it is generally associated with local inflammatory stimulation or factors such as the foreskin and prepuce, and generally does not require special treatment to keep the genitals clean and dry. 2. Condyloma acuminatum: refers to the wart-like growths in the coronary groove or the head of the penis and other parts of the wart-like growths, the beginning of the reddish or reddish pimples, and then gradually increased to cauliflower-shaped or corns and accompanied by itching sensation, burning pain, or odor, and so on. There may be other reasons for the growths on the foreskin, and it is recommended to consult a doctor for a clear diagnosis and treatment in order to avoid delaying the condition.