What should you know about bumps and dark spots on inner thighs?

Walking, exercise, moisture, and close clothing can rub the inner thighs. An irritated follicle or rash may then heal with post-inflammatory hyperpigmentation, leaving brown or grey marks after the bump has flattened. A scaly or itchy patch may have a different cause, such as a fungal rash. [Dark Patches On Skin](/symptoms/dark-patches-on-skin/) describes the symptom, while [Post-Inflammatory Hyperpigmentation](/conditions/post-inflammatory-hyperpigmentation/) explains marks left after inflammation. Color alone cannot identify the cause.

Keep the area clean and dry, change out of damp clothing, and choose breathable fabrics. Reduce rubbing with comfortable clothing and avoid picking bumps. Use a plain moisturizer if the skin is dry, but do not apply bleaching mixtures or strong exfoliants to irritated skin. Once the skin is quiet, a dermatologist can discuss options such as [Skin Brightening Treatment](/treatments/aesthetic-procedures/skin-brightening-treatment/), a [Chemical Peel](/treatments/aesthetic-procedures/chemical-peel/), or [Picosecond Laser Treatment](/treatments/laser-and-energy/picosecond-laser-treatment/) when appropriate for your skin and diagnosis.

Book an examination if bumps recur, become painful, drain, spread quickly, or form deeper lumps. Seek prompt care for fever, marked warmth, or rapidly worsening redness. Also arrange review if a dark patch changes quickly, bleeds, develops an irregular border, or remains unexplained after the irritation settles.

Are the bumps causing the pigment, or is there a separate rash? Which products are safe on inner-thigh skin? Would treatment of the marks be suitable after the inflammation is controlled?