Micropenis refers to an abnormally small penis. Micropenis is rare and hormonal or genetic issues are most often the cause. Doctors will usually diagnose and treat the condition at birth.
In this article, we look at the definition of micropenis, the symptoms and causes, and the ways a smaller-than-average penis may or may not affect sexual and other functions.
What is micropenis?
Hormonal issues typically cause micropenis, which is a rare condition.
Doctors diagnose micropenis when a person’s penis is 2.5 standard deviations below the average stretched length for their age and level of sexual development.
Research has estimated that the average penis size for an adult is 13.24 centimeters (cm) or 5.21 inches when stretched. For adults, doctors consider micropenis for a stretched penile length of less than 9.3 cm or 3.66 inches.
When a person has micropenis, their internal genitalia and testicles are usually normal.
Clinical sources define average and micropenis sizes for each age range, as follows: