指甲下的
Subungual hematoma is a common injury after a blow or crush injury to the nail, which causes severe excruciating pain. 摘要指甲下血腫在指頭受到撞擊或是壓碎性傷害后時常可見，并且會給病患帶來嚴(yán)重難以忍受的疼痛感。
