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What is Pearly penile papules and explain in detail?
Pearly penile papules (PPP) are benign small bumps on the human penis. They vary in size from 1–4 mm, are pearly or flesh-colored, smooth and dome-topped or filiform, and appear in one or several rows around the corona, the ridge of the head of the penis and sometimes on the penile shaft. They are painless, non-cancerous and not harmful.

Symptoms and signs
PPPs are small bumps on the human penis. They vary in size from 1–4 mm, are pearly or flesh-colored, smooth and dome-topped or filiform, and appear in one or several rows around the corona, the ridge of the glans and sometimes on the penile shaft. They are painless, non-cancerous and not harmful.

Cause and mechanism
PPPs are a type of angiofibroma. Their function is not well-understood. They are sometimes described as vestigial remnants of penile spines, sensitive features found in the same location in other primates. PPPs secrete oil that moistens the glans of the penis. They do not spread and often spontaneously regress. Along with Fordyce glands PPPs secrete oils to keep the skin of the head of penis in good condition. Smegma can accumulate if these oils are produced in excess or there is inadequate washing under the foreskin.

Diagnosis
Diagnosis is by visualisation. On dermoscopy, the white-pink papules appear in a cobblestone-like pattern and contain a central dotted or comma-shaped blood vessels. There is no scale. PPPs are sometimes mistaken for genital warts due to a perceived similarity in appearance. They can also appear similar to molluscum contagiosum, sebaceous hyperplasia and lichen nitidus. Histopathology shows dense connective tissue, fibroblasts and many blood vessels.

Treatment
Generally, reassurance is given and no treatment is needed