Penis Rashes: What Causes Them?

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Penile rashes can both be unpleasant and embarrassing. Fortunately, knowing the cause and symptoms of a rash on the penis can help you treat it at home and avoid overreacting to the symptoms, which can lead to more serious problems later on.

This comprehensive guide will help you find relief from penis rashes without making an embarrassing trip to the doctor's office, whether you have a jock itch or an STD.

You'll also know when to seek medical help.

What Is a Penile Rash?

Penile rashes are sores or spots on your penis or other groin areas. A red and itchy rash can develop on the tip or shaft of your penis. And the condition can manifest as soft pink spots, swollen lumps, or tiny bumps.

The rashes can be either benign or life-threatening. They can appear and disappear at will. Itching, pain, or tenderness are all potential side effects. 

Possible side effects include red blisters, scar tissue, pain or burning sensation while urinating, warmth or swelling, and scabbing.

Causes of Penile Rashes

A rash on penis can be due to a range of causes, as discussed below:

Contact dermatitis

When an outside substance, such as cologne, soap, or detergent, irritates your skin, it causes a red, itchy rash. Most outbreaks occur within minutes to a few hours of contact, but an outbreak can last up to a month. 

It’s also not contagious. When you get a rash, stop using any new products you've been using and discontinue them if your symptoms don't improve.

Sexually transmitted diseases (STDs)

STDs are one of the most common causes of penile rashes. These include chlamydia, genital herpes, gonorrhea, HIV/AIDS, HPV, and syphilis. The signs and symptoms of STDs may vary depending on which STD you have contracted. 

If you suspect that you may have an STD, it is important to see your doctor as soon as possible so that they can determine what STD(s) you may have contracted and prescribe treatment if necessary.


Balanitis, an inflammation of the penis's head, the glans penis, which can extend into the foreskin, can cause a rash on the penis head. Because their foreskin remains intact, uncircumcised males are more likely to suffer from this inflammation. 

It can be difficult to keep the skin beneath the genitals clean without circumcision. Bacteria, dead skin cells, and sweat can cause penis heads to swell. This condition frequently causes foreskin inflammation and itching. 

Furthermore, if you have diabetes, your chances of contracting it are increased because the sugar in your urine accumulates in your foreskin, which is a breeding ground for bacteria.

Allergic reactions and certain medications

Certain medications can cause a rash on the penis. It's possible that you have an allergy or that the medication is causing this side effect. Anti-inflammatory medications and antibiotics can cause drug eruptions on the penis. 

These can cause red, swollen plaques with a gray center on the genitals. Blisters and dark spots may also form after the inflammation subsides.


In rare cases, penile rashes can be caused by friction from tight-fitting underwear or pants. If you wear tight-fitting clothing, it is important to ensure that you do not have any chafing or redness on your penis. 

If you notice any redness or chafing, it is important to treat these areas immediately so that they do not develop into a full-blown rash.

Home Remedies for a Penis Rash

No matter what’s causing your penis rash, there are ways you can take care of it at home. The following remedies may help alleviate some of your symptoms and even clear the rashes:

Anti-itch cream

Applying a mild anti-itch cream can help relieve some of your symptoms and give you some relief. If you don’t have any on hand, try using over-the-counter hydrocortisone cream. The cream will soothe irritated skin and prevent you from scratching your genitals.

Cold compresses

Applying a cold compress or ice pack to your penis can help relieve some of your symptoms. If you don’t have an ice pack, try wrapping a few ice cubes in a thin towel and applying it to your genitals for 10 minutes. 

Don’t apply ice directly on your skin— you could cause more irritation.

Salts baths

Taking a warm bath with Epsom salts can help relieve some of your symptoms. The salt will help draw out any toxins in your skin and relieve inflammation. If you don’t have Epsom salts, try using baking soda instead.

Abstain from sex

If you’re having symptoms of a penis rash, it’s best to abstain from sexual activity until your symptoms clear up. This will help prevent further irritation and make your symptoms less noticeable.

Genital psoriasis

Psoriasis is a skin condition that causes red, scaly patches of skin. It is most commonly found on your elbows, knees, scalp, and lower back. However, the condition can also affect the penis and other genital areas.

Itching and soreness are possible side effects of this condition- as is dry, scaly skin.

If you have genital psoriasis, it is important to see your doctor as soon as possible to determine what treatment will work best for you.

When Should I Seek Medical Care?

Most penile rashes are minor and can be treated with over-the-counter (OTC) topical creams or ointments, oral medications, and home remedies. 

However, if your rash worsens or does not respond well to these remedies, you should seek medical attention immediately.

  • rash spreads to other areas
  • rash is painful
  • rash crusts
  • rash leaks a fluid
  • rash does not clear up within a week or two and gets worse

The Bottom Line

A penile rash can be alarming to experience, especially if you’re not expecting it. The good news is that there are many different types of penile rashes, and most are treatable at home with salt baths, cold compresses, and common over-the-counter remedies, such as cortisone cream. 

However, if your penile rash doesn’t respond to home remedies or you feel concerned about the potential cause of your penile rash, it’s best to visit your doctor immediately so they can take proper care of the issue and potentially prevent future occurrences.

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This blog post is for educational purposes only and does not constitute medical or other professional advice. Your specific circumstances should be discussed with a healthcare provider. All statements of opinion represent the writers' judgement at the time of publication and are subject to change. Phoenix and its affiliates provide no express or implied endorsements of third parties or their advice, opinions, information, products, or services.

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