急性疼痛与慢性疼痛有很大的差异。急性疼痛通常是由掐、热或电休克一类相当强的“侵害性刺激”引起的。临床上,侵害性刺激包括机械性损伤、灾害事故等所致的化学因素。急性疼痛的临床征候类似不安状态下出现的征候。即血压上升,心跳加快,瞳孔放大,手掌出汗,过度通气,运动过多及逃避行动。可见急性疼痛与生存及促进恢复有关,作为身体的生物学功能是有益的。但是,如持续疼痛,由于心理因素的作 Acute pain and chronic pain are very different. Acute pain is usually caused by a rather strong “invasive stimulus” such as pinch, heat or electroshock. Clinically, invasive irritants include chemical damage caused by mechanical damage, disasters and other chemical factors. The clinical signs of acute pain are similar to those found in an uneasy state. That is, blood pressure, rapid heartbeat, pupil enlargement, sweaty hands, hyperventilation, excessive exercise and avoidance. Shows that acute pain and survival and promote recovery, as the biological function of the body is beneficial. However, such as persistent pain due to psychological factors