Should You Pop a Blister? Keratosis Pilaris When hair follicles do not exfoliate naturally, they can become clogged with dead skin and cause a bumpy skin rash calledkeratosis pilaris. This commonly occurs on thearms, thighs, cheeks, and buttocks and results from a buildup of keratin in the p...
Within one to three days, the venom can sometimes kill the skin cells and surrounding tissues near the bite, known medically as local necrosis. The bite may look like a bullseye, as red rings develop around a black blister, a symptom of the woundnecrosis. What insect bite leaves a red ci...