What should you know about skin growth on penile shaft?

A lump may follow friction, shaving, an ingrown hair, a cyst, or inflammation. Some sexually transmitted infections can cause bumps, sores, or clustered lesions, so sexual history helps guide testing. A boil is often painful and inflamed; learn more about [Boils](/conditions/boils/). A new, firm, scaly, bleeding, or non-healing lesion needs review because [Basal Cell Carcinoma](/conditions/basal-cell-carcinoma/) is one condition clinicians may consider, though a penile growth alone does not diagnose cancer. More general information is available in [Skin Lumps](/symptoms/skin-lumps/).

Avoid squeezing, puncturing, shaving over, or applying acids and unprescribed creams to the growth. Wash gently, keep the area dry, and pause activities that cause rubbing. Avoid sexual contact until a clinician has assessed a new unexplained lesion, especially if there is an open sore or discharge. A dermatologist, sexual health clinician, or urologist can examine the skin and arrange swabs, urine tests, blood tests, or a biopsy when appropriate.

Arrange prompt care for a growth that bleeds, ulcerates, changes quickly, becomes painful, or is accompanied by discharge, burning urination, swollen groin glands, or fever. Seek urgent help for severe swelling, inability to pass urine, rapidly worsening pain, or fever with spreading redness. Do not wait for a lesion to become painful before arranging an assessment.

Ask whether the appearance suggests irritation, an infection, or another lesion; whether sexual health testing is needed; whether partners need advice; and whether a biopsy or removal is appropriate. If treatment is proposed, ask about wound care, sexual activity during healing, scarring, and recurrence. A [Steroid Injection Into The Skin](/treatments/injectables/intralesional-steroid-injection/) is not suitable for every penile lump.