The skin is very resilient but if compromised can get infected. Staph and Strep bacteria are often the cause of skin infections. This can present as multiple small pustules (folliculitis); red, crusty coin-sized plaques with honey-yellow crust (impetigo) or painful, red nodules (boil or furuncle).
Treatment: antibacterial washes (over-the-counter), antibiotic creams (prescription) and antibiotics. Boils may need to be surgically drained.