Friction
People who use backpacks, heavy sports equipment, medical equipment, collared shirts, and accessories such as brassieres can develop back acne categorized as acne mechanica. Acne mechanica develops when the skin becomes exposed to repeated friction and pressure, which causes inflammatory cutaneous lesions which can become highly infected if not soothed properly.
Acne mechanica, unlike acne vulgaris, is due to mechanical means that cause the skin to react to the existing pressure, which can lead to skin reddening and possible infections and inflammations. People susceptible to acne mechanica include people who play sports and are required to wear tight-fitting equipment, those who sit for long periods, such as truck drivers, and those who have noticeable tics that cause them to rub their skin repeatedly.
According to dermatologists and health experts, treating acne mechanica means removing the underlying cause of skin friction. In addition, they believe it’s essential to let the skin breathe and become free from pressure. Doctors recommend using gentle soaps, benzoyl peroxide, vitamin supplements, antibiotics, and hydroxy acids to treat the condition.