Sources of arm pain are numerous, affecting the muscles, tendons, ligaments, and bones of the arm, shoulder, elbow, wrist, hand, and fingers. If youâre experiencing a strange pain, tenderness, or numbness in your arm, and you donât know why, consider the following 10 common causes of arm painâ¦. ADVERTISEMENT.
abrasion. n. 1. the process of scraping or wearing down by friction. 2. a scraped area or spot; graze. 3. (Physical Geography) geography the effect of mechanical erosion of rock, esp a river bed, by rock fragments scratching and scraping it; wearing down. Compare attrition 4, corrasion.
The skin is composed of an outer layer (the epidermis) which provides protection, and a deep inner layer (the dermis), which provides the firmness and flexibility of the skin. Abrasions typically refer to an injury that removes these layers of skin. Cyclists often refer to abrasions from crashes as road rash..