Acne mechanica is a type of acne or acne-like eruption caused or aggravated by repeated friction, pressure, heat, or occlusion affecting the skin.
It can occur when helmets, tight clothing, straps, protective equipment, sports gear, or other objects repeatedly rub against or press on the skin. Heat and trapped sweat can further contribute to follicular blockage and irritation.
Acne mechanica can resemble ordinary acne but is distinguished by its relationship to mechanical stress and its distribution in areas exposed to that stress.
QUICK FACT
Acne mechanica is not caused by poor hygiene; reducing repeated friction, pressure, and occlusion can be more useful than aggressive cleansing.
COMMONLY CONFUSED WITH
- Acne vulgaris: the common form of acne involving several interacting biological mechanisms.
- Folliculitis: inflammation of hair follicles that can sometimes resemble acne mechanica.
SEE ALSO