Bumps on arms that are not keratosis pilaris

Keratosis pilaris tends to form many small, rough plugs around hair follicles, often on the outer upper arms. Smooth or tender red bumps, pus-filled spots, lesions centred on a recently shaved area, or a rash that started after a new product suggest a different process. An [Ingrown Hairs](/symptoms/ingrown-hairs/) page can help explain a trapped hair, while persistent or changing [Skin Bumps](/symptoms/skin-bumps/) deserve an examination.

Pause shaving, picking, harsh scrubs, and fragranced products over the area. Wash gently, pat dry, and use a plain moisturiser if the skin feels dry; [Emollient Therapy](/treatments/medical-dermatology/emollient-therapy/) describes moisturising care. If a clinician confirms blocked follicles, they may discuss a targeted product such as [Topical Retinoids](/treatments/medical-dermatology/topical-retinoids/) or another treatment. Do not squeeze bumps or apply prescription creams without advice.

Arrange a dermatology review if bumps are painful, pus-filled, spreading, repeatedly returning, intensely itchy, or leaving scars or dark marks. Seek prompt care for rapidly increasing redness, warmth, swelling, fever, or severe pain. A clinician can distinguish follicle inflammation, allergy, infection, and less common causes before recommending a peel or [Chemical Peel](/treatments/aesthetic-procedures/chemical-peel/).

Ask whether the bumps surround hairs, whether shaving or a product is contributing, and which ingredients are suitable for your skin tone and sensitivity. If hair removal is a trigger, ask whether [Laser Hair Removal](/treatments/laser-and-energy/laser-hair-removal/) is appropriate and how to reduce pigment changes.