Why Do I Get a Headache Every Afternoon?

Afternoon headaches typically stem from dehydration, eye strain, sleep deprivation, caffeine withdrawal, or stress buildup throughout the day. Your body's natural cortisol levels drop in the afternoon, around 2-4 PM, which may be associated with fatigue, which can contribute to tension headaches. Common culprits of afternoon tension headaches include skipping lunch, staring at screens for extended periods, or inadequate water intake. Blood sugar crashes from irregular eating patterns or caffeine withdrawal from morning coffee can also cause afternoon head pain. Poor posture during work hours creates neck and scalp muscle tension. Track your daily habits including meals, water intake, caffeine, posture, and stress levels to identify patterns and potential triggers. If the problem persists, see your healthcare provider.