Table of Contents
- 10 reasons men get nipple pain — and what each one usually means
- 1. Gynecomastia (the most common surgical cause)
- 2. Hormonal shifts (puberty, andropause, thyroid)
- 3. Friction (a.k.a. "runner's nipple")
- 4. Trauma or contact injury
- 5. Skin infection
- 6. Medication side effects
- 7. Anabolic steroid use
- 8. Allergic or contact reaction
- 9. Benign cysts and growths
- 10. Male breast cancer (rare, but always check)
- When to see a doctor
- What the diagnostic workup looks like
- Choosing your surgeon — board certification
- Frequently asked questions
- Ready to be evaluated?
Medically reviewed by Dr. Babak Moeinolmolki, board-certified cosmetic surgeon, Los Angeles. Last updated 2026-06-13.
Nipple pain in men is more common than most patients realize — and while it’s usually benign, a small percentage of cases signal something that needs medical attention. This guide walks through the 10 most common causes, when to see a doctor, and what diagnostic workup to expect.
10 reasons men get nipple pain — and what each one usually means
| Cause of nipple pain in men | How common | When to worry |
|---|---|---|
| Gynecomastia (true glandular) | Very common | If persistent >6 months |
| Hormonal shifts (puberty, andropause) | Common | If lasting >12 months in adults |
| Friction / chafing (runner’s nipple) | Very common | Rarely |
| Trauma or contact injury | Common | If swelling persists >2 weeks |
| Skin infection (cellulitis, folliculitis) | Less common | If redness spreads or fever |
| Medication side effect | Less common | Discuss with prescriber |
| Anabolic steroid use | Common in users | If lump develops |
| Allergic reaction (laundry, body wash) | Less common | If recurs with same product |
| Cysts or benign growths | Less common | If new or growing |
| Male breast cancer | Rare (≈1% of breast cancers) | Any hard, fixed, painless lump — see doctor immediately |
1. Gynecomastia (the most common surgical cause)
True gynecomastia — glandular breast tissue growth in men — affects up to 65% of adolescent males and 24–65% of adult men at some point. Early-phase gynecomastia is often tender or painful because the tissue is actively growing. If pain persists more than 6 months or you can feel a firm rubbery mass under the areola, schedule an exam.
2. Hormonal shifts (puberty, andropause, thyroid)
Testosterone and estrogen rebalancing during puberty and andropause both cause transient tender breast tissue. The Endocrine Society recommends a basic hormone panel (testosterone, estradiol, LH, FSH, prolactin, TSH) if symptoms persist more than 12 months in adults.
3. Friction (a.k.a. “runner’s nipple”)
Long-distance runners, cyclists, and rowers regularly develop nipple pain from repetitive shirt friction. The fix: nipple tape, lubricant (Body Glide), or technical wicking fabrics. If you see cracking or bleeding, treat with petrolatum + cover with a hydrocolloid bandage until healed.
4. Trauma or contact injury
Direct impact during contact sports, weightlifting straps cutting in, or even rough sleep position can cause days of soreness. Apply cold compress for 48 hours, then warm compress. If swelling persists past 2 weeks or you feel a firm lump where the bruise was, get it checked.
5. Skin infection
Folliculitis, cellulitis, or — rarely in men — mastitis can cause a red, warm, tender nipple. If the redness is spreading or you develop fever, see a doctor that day for antibiotics.
6. Medication side effects
Several common medications can cause breast tenderness or true gynecomastia. The most-reported include spironolactone, cimetidine, ketoconazole, finasteride, calcium channel blockers, and certain antipsychotics. UpToDate’s drug-induced gynecomastia list is the standard reference. If you started a new drug in the last 3–6 months, that’s the first thing to discuss with your prescriber.
7. Anabolic steroid use
Exogenous testosterone aromatizes to estrogen, which directly stimulates breast tissue. Steroid-induced gynecomastia often presents as painful, asymmetric, firm tissue under one or both areolas within weeks of cycle start. Aromatase inhibitors (anastrozole) and SERMs (tamoxifen, raloxifene) are sometimes used to manage symptoms, but surgical correction is often required once gland tissue is established.
8. Allergic or contact reaction
A new detergent, body wash, or fabric softener can cause contact dermatitis on sensitive nipple skin. Switch products to fragrance-free; the inflammation usually resolves in 7–14 days.
9. Benign cysts and growths
Sebaceous cysts, lipomas, and fibroadenomas can occur near or under the nipple. They’re almost always benign, but any new lump deserves an exam — and possibly an ultrasound — to rule out something more serious.
10. Male breast cancer (rare, but always check)
Male breast cancer accounts for about 1% of all breast cancers — roughly 2,800 new cases per year in the US. The classic presentation is a hard, fixed, painless lump — but pain doesn’t rule it out. Red flags: nipple retraction, nipple discharge (especially bloody), skin dimpling, lump that doesn’t move when you push it. Any of these warrant a same-week doctor visit.
When to see a doctor
- Pain lasting more than 4 weeks with no obvious cause
- A new lump you can feel — even if painless
- Nipple retraction or skin changes
- Any discharge from the nipple
- Pain accompanied by swelling, redness, or fever
- Pain after starting a new medication
What the diagnostic workup looks like
A standard evaluation for male nipple pain includes: a physical exam, basic hormone panel (testosterone, estradiol, LH, FSH, prolactin, TSH, liver function), and — if a lump is felt — an ultrasound, and if any concerning features, a mammogram or biopsy. Most workups complete in 1–2 weeks.
Choosing your surgeon — board certification
If your nipple pain stems from gynecomastia and you’re considering surgical correction, here’s what matters for surgeon selection: both the American Board of Cosmetic Surgery (ABCS) and the American Board of Plastic Surgery (ABPS) certify surgeons equally to perform gynecomastia surgery. Verify your surgeon’s credentials with either:
Beyond certification, look for case volume (≥50 gynecomastia cases/year), an AAAASF-accredited facility, and visible before-and-after photos of the surgeon’s own cases.
Frequently asked questions
Is one-sided nipple pain in men dangerous?
Most one-sided pain has a benign cause (friction, trauma, asymmetric gynecomastia). But any new unilateral lump warrants an exam to rule out male breast cancer, especially if you’re over 50.
Can supplements cause nipple pain?
Yes — pro-hormones, SARMs, and some testosterone boosters can elevate estrogen via aromatization. Creatine and protein powder do not cause nipple pain or gynecomastia, despite widespread internet claims.
How long does benign nipple pain last?
Friction-related pain resolves in days. Gynecomastia-related tenderness can last 6–24 months during active growth, then typically settles.
Does insurance cover the workup?
Yes — diagnostic workup (exam, labs, imaging) is standard medical care and usually covered. Cosmetic surgical correction of gynecomastia is typically not covered unless symptomatic and conservative treatment has failed.
Ready to be evaluated?
Dr. Babak Moeinolmolki offers consultations for men with nipple pain or suspected gynecomastia in Los Angeles. We assess the cause, order labs and imaging as needed, and only recommend surgical correction when it’s actually indicated. Book a confidential consultation or read more about what gynecomastia is and common gynecomastia causes.
Dr.Babak Moeinolmolki
LA Cosmetic Surgeon Dr. Moein is board-certified by the American Board of General Surgery.