What is a micropenis?

You are most probably here because you think you (or maybe your son) might have a micropenis, looking for methods to enlarge it or something similar. This page covers all the basics you need to know about the condition and is strictly based on medical facts and research. Let's begin

What is a micropenis?
Micropenis is a medical term used to describe an abnormally small penis. The most common criterion used to define a micropenis is a dorsal  erect penile length of at least 2.5 standard deviations smaller than the average human penis size. Confused?

In simple words, this means that any male adult with an erect penis of 9 cm (3.5 inches) or less should be evaluated for micropenis. For male newborns, the mean stretched penile length is around 3.5 cm and thus any baby with a stretched penile length of 2.0 cm or less, should also be evaluated. It is estimated that around 1 in every 200 individuals has the condition (0,5 %).

Please note that there is no standard size for micro-penis, as it depends on factors like the individual's age and ethnicity.

For example, a study named "Should the definition of micropenis vary according to ethnicity?" concludes yes because "Mean penile length and diameter are slightly but significantly smaller in newborns of Chinese origin compared to newborns of Caucasian and East-Indian origins."


a 7 cm (2.5 inches) erect micropenis
Erect micropenis - 7 cm (2 1/2 inches)
Photo by Rune

It should be mentioned that the micropenis term is typically used when the penis has a normal appearance with no other accompanying genital malformations, like hypospadias, epispadias, cryptorchidism etc. In the latter scenario, the term microphallus is preferred.

When and how can the condition be diagnosed ?
The condition is easily diagnosed at any age. A quick examination by a doctor or a physician will suffice. An individual can even perform a self-diagnosis, granted that he knows how to properly measure his penis.

However, several more tests may be required, as it common for the micropenis condition to be accompanied by other ailments, usually hormonal in nature like Klinefelter syndrome and Leydig cell hypoplasia. In most cases the condition is diagnosed right after birth.

What are the causes? 
The exact causes behind the condition have yet to be explored and understood in full extent. However, we do know that the condition is many times the result of several hormonal abnormalities (sex-chromosomes related) that occur during the second and third semester of pregnancy.

It is also possible for micropenis to be a part of other genetic malformation syndromes that are not related to the sex chromosomes. For example, it can be an early sign of congenital growth-hormone deficiency or congenital hypopituitarism.

Several homeobox genes have also been found to affect penis and digit size with no detectable hormone abnormalities.

Utero exposure to certain estrogen based fertility drugs like diethylstilbestrol (DES) has been linked to various genital abnormalities including the micropenis condition.

Finally, a 2012 study showed that domestic pesticide misuse increases the likelihood of newborns being born with a micropenis and/or other genital malformations.

Problems caused by micropenis
Some problems commonly reported by patients with the condition are:
  • Difficulty to urinate when standing
  • Difficulty to have sexual intercourse
  • Various psychological problems, ranging from "minor" - like low self-esteem and difficulty talking to women- to more serious, like suicidal thoughts.


erect 3.5 inches micropenis
Borderline micropenis about 3.5 inches erect


Conditions associated with the micropenis condition
The majority of accompanying conditions are of reduced prenatal androgen production or effect. Some of these conditions are the following:
  • Testicular dysgenesis
  • Klinefelter syndrome
  • Leydig cell hypoplasia
  • Specific defects of testosterone
  • 17,20-lyase deficiency
  • 5α-reductase deficiency
  • Androgen insensitivity syndromes
  • Inadequate pituitary stimulation Gonadotropin deficiency Other forms of congenital hypogonadism.

Treatments
Unfortunately, there is no easy and quick treatment for patients with a micro-penis. Still, there are many clinically tried methods that can induce some growth. However, these methods greatly vary and depend on the patient's age and the severity of the condition (how small the penis is).

Treatments for adults
As of now there are two clinically proven ways to enlarge an adult's penis and thus a micropenis. Click the corresponding links, to read more for each option:
  • Using a penis traction device: A 2006 study has showed that penis enlargement using a traction device is possible. However, this is an option for border-line micropenises (3.0 inches when erect or larger). This is the method I used to enlarge my penis from 5.0 inches to 5.8
  • Phalloplasty: Phalloplasty is a type of surgery that among others, is also used for penis enlargement. There have been been many successful examples, some of which are featured in the studies section of the site. Notable is the case of Sergei, a russian guy who initially had a penis that was about 2 inches long when erect. With a revised phalloplasty, doctors enlarged it to 7 inches!
  • Human Chorionic Gonadotropin, may have possible future applications for the treatment of adults. However this hormone treatment is still experimental, having been tried only once in human patients.

a circumcised micropenis about 1.5 inches long when erect


Treatments for children
Hormone treatment (with testosterone) has shown very promising results in the treatment of micropenis, especially when given at a very young age. For example, a study published in 1999 showed that 1 or 2 short courses of testosterone have a high success ratio (more than 80 %) in augmenting penile size into the normal range. The latter is especially true for micropenis resulting from fetal testosterone deficiency.

Alternative Treatment Options
In the past, many doctors opted newborns with a micropenis for a sex reassignment operation. In the past years the approach has been abandoned for a variety of reasons which are thoroughly explained here.

Are you a concerned parent?
Many parents are concerned that their son may have a smaller than average penis. As aforementioned, the condition is diagnosed at birth. However it sometimes goes unnoticed and then it's too late to "fix" it with hormonal therapy. Here's a table showing the normal penis size in inches for each age group. Please click here for some extra parental advice.

AgeNormal: Mean +/- 1 SD (inches)Abnormal: Mean – 2.5 SD (inches)
0-5 months1.5 +/- 0.30.75
6-12 months1.7 +/- 0.30.9
1-2 years1.9 +/- 0.31.0
2-3 years2.0 +/- 0.41.1
3-4 years2.2 +/- 0.41.3
4-5 years2.2 +/- 0.41.4
5-8 years2.4 +/- 0.41.5
8-11 years2.5 +/- 0.41.5
Adult5.2 +/- 0.63.7


It should be noted that many eight- to fourteen-year-old boys referred to a doctor for micropenis do not actually have the condition. Such concerns are usually explained by one of the following reasons:
  • Obesity - a penis may be concealed in suprapubic fat 
  • A large body and frame that makes the penis appear small
  • Delayed puberty with good reasons to expect future normal growth.

Don't forget, reading stuff on the Internet is great but nothing can replace the opinion of a specialist! Please consult a doctor if you are worried about your son's health!


Any other questions?
Got any other questions not covered by the article? If yes, I invite you to check the other sections of the site using the menu at the top. You can find almost anything from studies to documentaries to personal stories from guys with a micropenis.

If you still have questions then simply leave a comment using the comments down below.

Do you have one?

11 comments:

  1. How is the penis traction done?

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  2. I always knew I had a small penis never knew it had a name for it

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  3. yeah im 19 and i thot it was always just small. this really sucks. havnt decided what to do yet. suicide is definetly an option gonna go see a doctor soon to see my options

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    Replies
    1. Honey, suicide is never an option....acceptance of oneself is a first and foremost...and sexual satisfaction takes on many pleasureable forms! ;)

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  4. I was born yrs ago by a contry dr. They just thought it was nature no horomonies were given so just put up with micro penis and small testicles always had diffuclity urinating when standing.The sex thing was a whole different page trying to please a woman was not good.

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  5. 52 married 5 kids i have a micro

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  6. My boyfriend has one and he knows how to use it. There are so many ways to satisfy your woman. Just be willing to make sure that she is satisfied before intercourse. I, even, have orgasms when he is inside me. I try to find ways to please him as well. Oh guys......BJs are much more exciting with a micro !!!

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  7. Thank you for this site! I am 22 y.o. and until now I always thought I was small but didn't know I have actually a medical condition with a name (my fully erect penis is about 5cm long which I think would be a little more than 2 inches, so it can be considered a misropenis!). I am also happy that others have shared their experiences, so that me and my girlfriend don't need to be afraid not to have babies in future. And for others that might read this blog, I am in a long-term relationship with a girlfriend and she is satisfied with me, she said that it doesn't bother her when I asked her, so don't worry, you can have a good relationship and sexual life even if you have a micropenis!

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  8. WOW thank you guys fully erect my penis is 2 1/2 cm s have hidden away most of my life
    Great to see men like me
    Thanks

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  9. I'm almost 3.7 on the dot when fully erect. Does this mean I have a micro?

    ReplyDelete

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