Cluster headache

Brief overview Symptoms: Unilateral, severe headache, boring or cutting pain especially behind the eye, attack duration 15 to 180 minutes, restlessness and urge to move; watery, red eye, swollen or drooping eyelid, runny nose, sweating in the forehead area or face, constricted pupil, sunken eyeball Causes: Not clear, probably misregulated biological rhythms (such as diurnal … Cluster Headaches: Description