The bags under the eyes keep twitching and throbbing, which can be related to eye fatigue, inverted eyelashes, brain tumors and other factors. 1. Eye fatigue: If the prolonged use of electronic products causes eye fatigue, the bright light emitted by the electronic screen can stimulate eye muscle spasms, and the bags under the eyes will keep twitching and throbbing. 2. Inverted eyelashes: Eyelashes that grow backwards towards the eyeball can stimulate abnormal discharge of local neurons under the eye, which in turn leads to involuntary contraction of the lower eyelid muscles, i.e., twitching and throbbing all the time. 3. Brain tumor: If there is a tumor in the head, when the volume increases to a certain extent, it may compress the nerves that govern the movement of eye muscles, thus leading to the lower eyelid bags have been twitching and throbbing. If the bags under the eyes keep twitching and throbbing, and can not be relieved by resting, you must go to the regular hospital to find out the cause of the disease, and actively cooperate with the professional doctor’s treatment.