This occurs because the testicles try to maintain a certain temperature that is ideal for sperm production. That temperature is slightly cooler than average body temperature, which is why the testicles tend to hang down away from the body.
But when exposed to cold water or cold temperatures, the cremaster muscle kicks in, pulling the testicles up into the body for warmth. There is usually no medical or health explanation for a size difference. However, if you notice a change in the size or shape of one or both testicles, you should tell your doctor. If one testicle starts to feel heavier or you feel a lump or a change of shape, it could be a tumor and possibly the first sign of testicular cancer. This form of cancer is often treated successfully, but an early diagnosis is critical.
Testicular cancer or testicular torsion , which is a twisting of the spermatic cord that causes pain and swelling, should be evaluated and treated by a doctor soon after symptoms develop. Regardless of the size of your testicles, you should perform monthly testicular self-examinations to check for lumps or other changes that might indicate disease.
A self-exam can be done after a shower or before you get dressed in the morning. To do a self-exam, take a minute to gently roll your testicles between your thumb and fingers to feel for any changes in their size, shape, or hardness. If you experience any pain during a gentle exam or you notice a suspicious lump, swelling, or other change, see your doctor soon.
Such changes could suggest testicular cancer or an infection. You may discuss changes to your testicles with your primary care physician or you can make an appointment to see a urologist. A urologist is a doctor who specializes in the health of the male reproductive system and the urinary tract. Testicular cancer is usually treated by surgically removing the cancerous testicle , but when caught early, the other testicle is usually spared.
The health and function of your genitalia is more important than size. If you feel that your testicles are too small or you have other symptoms that concern you, like low libido, excessive breast tissue, or infertility, talk with your doctor. Testosterone therapy can often help. If sperm production is affected, there are fertility specialists who may be able to help you and your partner conceive a child.
Here's what to watch for. Learn why undescended testicle repair surgery is performed and what to expect during and after the procedure. Learn what causes blue balls and when testicular pain may be a sign of something more serious.
A healthy sperm count can help increase your chances for conception. As the body ages, the testicles grow smaller.
The medical name for this is testicular atrophy TA. TA tends to be a gradual process. It may occur so slowly that the person does not notice the change in size.
Other symptoms of TA can include reduced muscle mass and a gradual loss of sex drive. Some health conditions can cause the testicles to shrink. If signs of these occur, a person should seek medical treatment. Anyone who has had sex without protection should receive testing for STIs. An STI may cause one or more of the following symptoms:. Doctors usually recommend performing these examinations after a hot bath or shower. At this time, the skin of the scrotum is most relaxed, making it easier to feel the testicles within.
The American Urological Association provide the following tips for testicular self-examinations:. A person may feel a cord-like structure, called the epididymis, at the base of each testicle.
These bundled tubes carry sperm from the testicles. Contact a doctor about any changes or lumps in the testicles as soon as possible. The doctor will perform a close examination for signs of disease. Testicular cancer is one rare but highly treatable disease involving the testicles. If a doctor diagnoses and treats this cancer in its early stages, it is usually curable.
Testicle size does not generally indicate a cause for concern. Most males have one testicle that is smaller than the other, a testicle that hangs lower than the other, or both. Certain issues and health conditions, such as testicular cancer, can cause changes in the size and shape of the testicles.
Performing regular testicular self-examinations can help catch these diseases early and allow for the best chance of successful treatment. Infertility or a couple being unable to conceive a child can cause significant stress and unhappiness. There are numerous reasons for both male and…. Most men have asymmetrical testicles. Find out what is normal, what causes enlarged testicles, and how to check for testicular abnormalities.
A look at when boys stop growing, which happens after puberty has finished. Included is detail on average height and the genetic factors involved. Often, different-sized testicles are not an indication of a problem. However, the following may be signs of something more serious:. If you notice that one testicle is bigger than the other and experience pain in either testicle, notify your healthcare provider immediately.
Being familiar with the testes' standard shape, appearance, and feel will help you notice when a change occurs. Normal anatomy includes:. You should perform a testicular self-exam monthly.
To do a testicular self-examination, follow these steps:. Contact your healthcare provider if you notice any of the following:. There are some common conditions involving lumps, pain, or swelling of the testicles.
These are usually are not life-threatening, but they do require medical attention. They include:. Testicular torsion is a medical emergency. Getting medical treatment within the first hours of a problem has the highest chance of saving the testicle. These symptoms may feel scary or embarrassing, but don't let that stop you from seeing your healthcare provider. It's essential to get checked out quickly so that your symptoms do not become worse.
Performing monthly self-examinations is an important part of finding testicular cancer early. Symptoms of testicular cancer include:. If you experience a change in size, shape, or appearance or notice pain in your testes, notify your healthcare provider immediately. A scrotal ultrasound is a diagnostic exam that can identify structural changes of the testes.
It can help your healthcare provider identify things like varicoceles, cysts, and testicular cancer. Having one testicle that is slightly larger than the other is entirely normal.
However, swelling, pain, redness, and lumps are not. Doing monthly self-exams is an excellent way to watch for changes in your testicles that could indicate a problem. If you notice any changes, it's a good idea to see your healthcare provider to rule out any issues. The symptoms are often the result of a less serious condition. Sign up for our Health Tip of the Day newsletter, and receive daily tips that will help you live your healthiest life.
Testicular asymmetry in healthy adolescent boys. BJU Int. Beaumont Health. Signs and symptoms of scrotal and testicular conditions.
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