Painful bumps under the armpit after shaving

Armpit skin experiences moisture, friction, deodorant exposure, and hair removal. A cut hair may turn inward and cause a tender raised spot. Multiple small bumps around hairs may indicate folliculitis. Razor bumps can recur when close shaving causes curved hairs to re-enter the skin. A deeper, repeated lump is not explained by shaving alone and should be examined, particularly if it drains or leaves scars.

Stop shaving the sore area temporarily and cleanse it with lukewarm water and a mild product. A warm compress may ease discomfort. Do not lance, squeeze, or try to pull out a hair beneath the skin. Wear a breathable top and reduce rubbing while the skin settles. When shaving again, use lubrication, a clean razor, and fewer passes. Recurrent problems can be discussed with a clinician, including [Laser Hair Removal](/treatments/laser-and-energy/laser-hair-removal/) or care for [Ingrown Hairs](/symptoms/ingrown-hairs/).

Seek care if the lump enlarges, feels deep, becomes hot, leaks pus, or is accompanied by fever or spreading redness. Arrange an appointment when bumps recur, scars form, or a lump remains after the shaving irritation has gone. Prompt examination helps distinguish [Folliculitis](/conditions/folliculitis/) from other causes.

Is this an ingrown hair or folliculitis? Could deodorant or friction be contributing? How long should I stop shaving? What would make laser hair removal or another treatment suitable?