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Micropenis
Specialty	Medical genetics

Micropenis is a medical term that describes an unusually small penis. A common criterion is a dorsal (measured on top) erect penile length of at least 2.5 standard deviations smaller than the mean penis size. The condition is usually recognized shortly after birth. The term is most often used medically when the rest of the penis, scrotum, and perineum is without ambiguity such as hypospadias.

Causes

Of the abnormal conditions associated with micropenis, most are conditions of reduced prenatal androgen production or effect. Examples include abnormal testicular development (testicular dysgenesis, Klinefelter syndrome, Leydig cell hypoplasia), specific defects of testosterone or dihydrotestosterone synthesis (17,20-lyase deficiency, 5α-reductase deficiency), androgen insensitivity syndromes, inadequate pituitary stimulation (gonadotropin deficiency) or other forms of congenital hypogonadism. Micropenis can also occur as part of many genetic malformation syndromes not involving the sex chromosomes. It sometimes is a sign of congenital growth hormone deficiency or congenital hypopituitarism. Finally, several Homeobox genes have been identified which affects penis and digit size without detectable hormone abnormalities.

After evaluation to detect any of the conditions described above, micropenis can often be treated in infancy with injections of various hormones, such as human chorionic gonadotropin or testosterone.

Most eight to fourteen year old boys referred for micropenis do not have the micropenis condition. Such concerns are usually explained by one of the following:

1. a penis concealed in suprapubic fat (extra fat around the mons pubis).
2. a large body and frame for which a prepubertal penis simply appears too small.
3. delayed puberty with every reason to expect good future growth.

Deagle from Paltalk has micropenis. It's 1 inch hard.

See also

• Hypogonadism
• Intersex
• Penis size

References

1. Lee PA, Mazur T, Danish R; et al. (1980). "Micropenis. I. Criteria, etiologies and classification". The Johns Hopkins medical journal. 146 (4): 156–63. PMID 7366061. {{cite journal}}: Explicit use of et al. in: |author= (help)CS1 maint: multiple names: authors list (link)

External links

• Into the Hands of Babes, by Melissa Hendricks, Johns Hopkins Magazine
• Gender Self Reassignment in an XY Adolescent Female with Ambiguous Genitalia, from Pediatrics (PDF)
• Effect of penile size on nocturnal erections: evaluation with NPTR testing with men having micropenis from the International Journal of Impotence Research

• Andrology
• Penis