Pediatric Micropenis

Pediatric Micropenis

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Summary

A micropenis is a penis that is smaller than the average size penis.

Expanded overview

A micropenis occurs when a baby boy is born with a penis that is smaller than average. The normal length of a newborn boy’s penis is 2.8 to 4.2 centimeters (1.1 to 1.6 inches). A baby with a penis that is less than 1.9 centimeters (0.75 inches) long is said to have a micropenis.

This condition generally affects the male throughout his life, and can cause problems with sexual function.

Causes

Micropenis may be caused by hormone defects or deficiencies, or genetics.

Symptoms

The symptoms of micropenis include:

  • Smaller than average size penis (0.75 inches or smaller in a newborn, or 2.8 inches or smaller in an adult male)
  • Problems with sexual function

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