Lump Under the Skin on the Inner Thigh Near the Groin

A lump under the skin near the groin should be assessed by its tenderness, warmth, mobility, surface changes, and pattern over time. Sweat, shaving, tight clothing, and skin-to-skin friction can irritate follicles on the inner thigh. A deeper lump may have a different cause, so its exact position and relationship to the skin matter during an examination.

A sore, warm, red swelling or a spot with drainage can fit with a boil; read [Boils](/conditions/boils/) for related information. Recurrent lumps in the groin or armpits should be discussed with a clinician because repeated inflammation needs a tailored plan. A smooth, mobile lump may be a cyst or fatty growth, while a firm, fixed, crusted, or bleeding skin lesion needs assessment. [Skin Lumps](/symptoms/skin-lumps/) gives an overview. [Basal Cell Carcinoma](/conditions/basal-cell-carcinoma/) is one possible skin-growth diagnosis, but the location alone does not identify the cause.

Keep the area clean and dry, choose loose breathable clothing, and pause shaving over the lump until the skin settles. Do not squeeze or lance it, especially near the groin. Record whether it follows friction, a menstrual-cycle change, shaving, or a new product. Book an examination if it remains, grows, recurs, or affects walking. A clinician may discuss [Steroid Injection Into The Skin](/treatments/injectables/intralesional-steroid-injection/) for selected lesions after confirming the diagnosis.

Seek prompt care if redness spreads, pain escalates, pus appears, fever develops, or the swelling becomes rapidly larger. Arrange a timely examination for a hard or fixed lump, persistent bleeding or crusting, or a lump that keeps returning. Urgent help is appropriate for severe pain with marked swelling, faintness, or difficulty walking.

Ask whether the lump is in the skin, a follicle, or deeper tissue; whether an examination or imaging is needed; and how to reduce friction or recurrence. Tell the clinician about shaving, drainage, fever, pregnancy possibility, medicines, and any similar lumps elsewhere.