疼痛是机体被有害因素侵袭的一种信号,可作为某些疾病的早期症状或首发症状,有时甚至是唯一的症状,因此必须提高警惕,及早明确诊断,并给予积极处理。任何感觉神经所受的刺激超过一定强度时都可引起疼痛,神经痛的特点是:①疼痛沿单一的神经或其分支放散,有较明确的界限;②神经痛常好发于一定的神经,如颅神经中以三叉神经,脊神经中以坐骨神经最为 Pain is a signal that the body is attacked by harmful factors. It can be used as an early symptom or first symptom, sometimes even the only symptom of some diseases. Therefore, vigilance, early diagnosis and positive treatment must be taken. Any feeling of nerve stimulation over a certain intensity can cause pain, neuralgia is characterized by: ① pain along a single nerve or its branches to disperse, there is a more clear line; ② neuralgia often occur in certain nerves, Such as cranial nerve in the trigeminal nerve, spinal nerve to the most sciatic nerve