No insect visible; likely keratosis pilaris (“chicken skin”)

Human skin, commonly the upper arms, thighs, cheeks, or buttocks

Not applicable; the bumps result from keratin plugging hair follicles

Usually persistent or recurrent, often rough and flesh-colored or mildly red; it is not contagious and may worsen with dry skin

Generally harmless and causes mainly cosmetic or mild irritation concerns. Moisturizers containing urea, lactic acid, or salicylic acid may improve texture; seek medical advice if lesions become painful, rapidly change, or show infection signs