headache

1. Something or someone that causes anxiety;
   A source of unhappiness (synset 105840588)
   "New York traffic is a constant concern"; "it's a major worry"
   is a type of: negative stimulus - a stimulus with undesirable consequences
   subtypes:

   • bugaboo - a source of concern
   • burden, encumbrance, incumbrance, load, onus - an onerous or difficult concern
   • business - a rightful concern or responsibility
   same as: concern, vexation, worry
2. Pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs (synset 114350016)
   is a type of: ache, aching - a dull persistent (usually moderately intense) pain
   subtypes:

   • cluster headache, histamine headache - a painful recurring headache associated with the release of histamine from cells
   • hemicrania, megrim, migraine, sick headache - a severe recurring vascular headache; occurs more frequently in women than men
   • sick headache - a headache accompanied by nausea
   • sinus headache - a headache resulting from congestion or infection in the paranasal sinuses
   • tension headache - a headache located at the back of the head; usually caused by body tension resulting from overwork or psychological stress
   same as: cephalalgia, head ache

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