Is a Penis Yeast Infection Contagious? What Men Should Know (2025 Guide)
A penis yeast infection—also known as male candidiasis—is far more common than most men think. But one of the biggest questions men have is simple:
“Can I pass a penis yeast infection to my partner?”
The answer is: Yes, a yeast infection can be contagious—but not in the same way an STI spreads. In this article, we break down how transmission works, when it’s most likely to happen, and how to protect both yourself and your partner.
What Makes a Penis Yeast Infection Contagious?
A penis yeast infection is caused by an overgrowth of Candida, a naturally occurring fungus. Candida normally lives on the skin, but when conditions are just right—warmth, moisture, irritation—it multiplies quickly and causes an infection.
You can pass yeast to your partner if:
- You have visible symptoms (redness, itching, white patches)
- You have a high level of yeast on the skin
- You have unprotected sex during an active infection
- Your partner is already prone to yeast overgrowth
Unlike STIs, Candida isn’t always considered a “pathogen.” It only causes problems when it overgrows—making transmission possible but not guaranteed.
How Yeast Infections Spread Between Partners
Here are the most common ways a penis yeast infection can be passed on:
1. Vaginal Sex
During penetration, any excess yeast on the penis can transfer to the vagina. This is why couples often “pass” yeast infections back and forth.
2. Oral Sex
Candida can be transferred from the penis to the mouth (oral thrush) or from the mouth to the penis.
3. Skin-to-Skin Genital Contact
Even without penetration, warm moist areas make transfer easy.
4. Sharing Towels or Personal Items
Rare, but possible—especially if items stay damp.
Signs You May Have Passed a Yeast Infection to Your Partner
If your partner develops any of the following, transmission is likely:
- Itching or burning
- Cottage-cheese-like discharge
- Redness or irritation
- Pain during sex or urination
It’s very common for both partners to require treatment at the same time.
Can You Have Sex With a Penis Yeast Infection?
You technically can—but health experts recommend avoiding sexual activity until your infection clears. Here’s why:
- It increases the chance of passing the infection
- Sex often makes symptoms worse
- Friction can delay healing
If you do have sex:
- Use condoms
- Avoid lubricants with sugar or fragrances
- Wash gently before and after
But the safest choice is to wait until your symptoms are gone.
How to Avoid Passing a Penis Yeast Infection to Your Partner
Use these simple prevention steps:
- Treat your infection fully (don’t stop early)
- Avoid sex for 7–14 days depending on severity
- Wear cotton underwear to reduce moisture
- Avoid tight clothing that traps heat
- Keep the area clean & dry
Probiotics can also help stabilize Candida levels in both men and women.
When Both Partners Need Treatment
If the infection keeps coming back, both partners should treat simultaneously—even if one person has no symptoms. Silent yeast overgrowth is common.
A doctor may prescribe:
- Clotrimazole cream
- Miconazole
- Nystatin
- Oral Fluconazole (single dose)
Is a Penis Yeast Infection an STI?
No. A penis yeast infection is not a sexually transmitted infection.
But sexual activity can trigger, worsen, or share the infection—so it behaves similar to an STI in certain situations.
When to See a Doctor
Consult a doctor if:
- Symptoms last more than 7–10 days
- You have recurring infections (4+ per year)
- You have diabetes or high blood sugar
- You develop swelling, cracking, or open sores
Chronic yeast infections are often linked to underlying health issues like diabetes, immune challenges, or poor hygiene habits.