SYMPTOM
A throbbing or dull head pain that appears during or after coffee consumption. It can stem from caffeine's direct effect on blood vessels or from your body's reaction to additives like sugar or sweeteners.
For general awareness only. This is not medical advice. If symptoms are severe or persistent, consult a healthcare professional.
Showing 7 causes
Caffeine rebound vasodilation
Caffeine narrows brain blood vessels. As the effect wears off hours later, these vessels rapidly expand, causing a throbbing pain.
Diuretic-induced dehydration
Coffee makes you urinate more, which could lead to mild dehydration. This reduces brain fluid volume, causing an ache from meningeal tension.
Tannin or histamine sensitivity
Coffee contains compounds like tannins or histamines that could trigger inflammation. In sensitive people, this leads to a headache shortly after drinking.
Post-caffeine hypoglycemia
Caffeine could cause a blood sugar spike, then a sharp drop a few hours later. This low blood sugar state could trigger a dull, throbbing headache.
Adrenal gland stimulation
Caffeine triggers your adrenal glands to release stress hormones like cortisol. This could increase muscle tension in your neck and scalp, which leads to a tension headache.
Adenosine receptor upregulation
Regular caffeine use makes your brain create more adenosine receptors. If you have coffee later than usual, the excess receptors cause intense vasodilation and pain.
Acute blood pressure spike
Caffeine could cause a temporary, sharp increase in blood pressure. In some people, this sudden spike could directly manifest as a pressing headache.