Top Five Mysteries behind Severe Headaches Unraveled for Your Understanding and Relief

Cluster Headaches: The Unpredictable Offender

Cluster headaches are severe headaches concentrated on one side of the head, striking swiftly, without warning, and are generally brief but agonising. Associated symptoms may include redness in the eye, nasal congestion, or a drooping eyelid - all situated on the same side as the headache.

The occurrence of cluster headaches follows a cyclical pattern, leading to bouts or 'clusters' of frequent attacks, every day for weeks or months, followed by remission periods where the headaches stop altogether. The autonomic nervous system (the part of the nervous system controlling body functions like temperature regulation) plays a critical role causing the distinctive symptoms.