Have your penis decreased? Know if the penis is decreasing


A few men know, but the penis can, indeed, decrease in size. Of course, this doesn't happen by chance. Usually the penile reduction is linked to a condition that leads to the difficulty of erection or the formation of fibrosis in its interior.

If this subject brings you concern, do not worry. In this post I will detail the causes, care and how you can evaluate if your buddy needs medical help. The important is to know that there is treatment.


First of all, observe the size of your penis. To get a good idea, you must measure it when you are standing up and with the penis erect. Use an accessible reference, such as your hand, fingers, a ruler or the distance to your navel, to do a periodic comparison.

If you notice a poor erection, I advise you to seek a urologist for a more assertive diagnosis, since the self-assessment will only be accurate if the penis is full erect. With medical guidance, you can perform a color-coded ultrasound examination using induced erection to evaluate the internal structures of the limb, blood flow, and the existence of superficial or internal fibrosis, which may cause a reduction.



The shortening of the penis is associated with certain medical and surgical conditions of the man that normally cause the erectile dysfunction. Next you will understand each one of them better.


Absence of involuntary nocturnal or morning erection

Do you know when you wake up in the middle of the night, or in the morning, and realize that your penis is erect without having had any sexual stimulation? This is a perfectly normal situation and should happen with a certain regularity when the health of the penis goes well. The lack of this erection leaves the penis less oxygenated, and may favor the formation of fibroses over time.

Be aware, it may be related to a hormonal disorder or a more serious problem of erectile dysfunction. If you have had erectile problems for some time, or noticed a large reduction of the size of the penis in recent years, please contact us by this link so we can plan a presential evaluation.

Treatment of prostate cancer

Surgery, radiotherapy, brachytherapy or hormone therapy, methods to treat prostate cancer, are highly associated with side effects such as erectile dysfunction, fibrosis and shortening of the penis. Learn about other consequences of prostate cancer, how to prevent and treat each of them.

Treatment of erectile dysfunction

The continued use of medications and injections to stimulate the erection usually causes side effects that form scarring in the penis and can progress to fibrous plaques. These plaques can cause not only shortening, but also a curvature and penile thinning.

Patients with diabetes

Diabetes is related to the increased amount of sugars in the blood. The lack of control of these rates causes damage to the functioning of nerves and blood vessels, which can lead to erectile dysfunction. As the difficulty of erection favors the appearance of fibrosis in the tissues of the penis, this situation can also cause its diminution. Learn more about the relation between diabetes and erectile dysfunction. 


Patients with cardiovascular problems

Cardiovascular conditions, such as atherosclerosis, can cause slow blood flow inside the penis, which hinders the erectile ability and can cause penile size reduction, as well as prevent a satisfactory sexual intercourse. 

Patients who developed Peyronie's Disease

Peyronie’s disease is caused by fibroses that can attack both sides of the penis. This situation affects not only the curvature, but can also cause a considerable reduction in size and aggravate erection problems.


Pacientes que tiveram Priapismo

Priapism is a very prolonged erection, without any physical or psychological stimulation. In addition to being quite painful, it can have very serious consequences, such as irreversible erectile dysfunction, necrosis and internal fibrosis of the corpora cavernosa, responsible for reducing the length and the caliber of the penis.


The first thing that men think when penile prosthesis is talked is that it will increase the size of the penis. We have already seen in this post that this is a myth.

The implant is made to give rigidity and firmness to the penis. Before performing the procedure, the doctor should do the necessary evaluation to identify if there is a penile reduction. This problem can be corrected during the prosthesis placement surgery, through penile reconstruction, bringing more comfort and satisfaction to the patient. This is the great differential of the Egydio Technique.


"I'm not sure if my penis has decreased"

This doubt is very common among my patients.


There are men who easily notice that the penis has decreased and others that can't because of the problem of erection. In any case, it is important to seek medical help to make a more assertive diagnosis and to make the appropriate treatment.

I understand that this is a delicate subject and that it can cause certain constraints. I am here to listen to you and provide the necessary medical guidance with discretion.

If you have noticed a different situation with your penis, or with the quality of the erection, fill out this pre-analysis form and we will start a conversation in search of the best solution.

Dr. Paulo Egydio

MD, PhD, Dedicado no Tratamento da Doença de Peyronie, Pênis Curvo e Implante de Próteses Penianas. Doutor em Urologia pela USP, CRM 67482, RQE 19514. - Vencedor do Debate do Sobrevivente da AUA em 2019.

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