The attacks of neuralgia, commonly brief in themselves, may succeed each other without respite for hours or days, robbing the victim of appetite and sleep and reducing him to a state of exhaustion and mental depression.

• 神经痛发作本身一般是短暂的，但也可以不停地持续几个小时或几天地反复发作，使病人食欲减退，不能入睡，然后呈现疲惫和忧郁。