Why do I get a sudden sharp headache that lasts for only three seconds?
1. Introduction A sudden, sharp headache lasting only a few seconds is clinically characterized as a primary stabbing headache, historically known as an ice-pick headache. This transient pain is driven by a brief, spontaneous dysfunction or misfiring of the trigeminal nerve pathways in the brainstem, causing a focal sensory disturbance without underlying structural pathology. The … Read more