출처: http://www.bbc.com/news/health-38207594 Pubic hair grooming 'STI risk linked to skin tears' (Skin tears. A skin tear is a traumatic wound or laceration. In the elderly, it can be the result of a minor environmental insult. Skin tears occur primarily on the extremities as a result of friction alone or shearing and friction that separates the epidermis from the dermis (a..