|
In dermatology, an abrasion is a wound caused by superficial damage to the skin, no deeper than the epidermis. It is less severe than a laceration, and bleeding, if present, is minimal. Mild abrasions, also known as ''grazes'' or ''scrapes'', do not scar or bleed, but deep abrasions may lead to the formation of scar tissue. A more traumatic abrasion that removes all layers of skin is called an avulsion. Abrasion injuries most commonly occur when exposed skin comes into moving contact with a rough surface, causing a grinding or rubbing away of the upper layers of the epidermis. ==By degree== * A first-degree abrasion involves only epidermal injury. * A second-degree abrasion involves the epidermis as well as the dermis and may bleed slightly. * A third-degree abrasion involves damage to the subcutaneous layer and the skin and is often called an ''avulsion''. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Abrasion (medical)」の詳細全文を読む スポンサード リンク
|