Micropenis

What does micropenis mean?

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.

What are the signs and symptoms of a micropenis?

Signs and symptoms 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

What are the causes of micropenis?

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