| headache | | |
| n. (cognition) | 1. concern, headache, vexation, worry | something or someone that causes anxiety; a source of unhappiness.; "New York traffic is a constant concern"; "it's a major worry" |
| ~ negative stimulus | a stimulus with undesirable consequences. |
| ~ bugaboo | a source of concern.; "the old bugaboo of inflation still bothers them" |
| ~ burden, encumbrance, onus, incumbrance, load | an onerous or difficult concern.; "the burden of responsibility"; "that's a load off my mind" |
| ~ business | a rightful concern or responsibility.; "it's none of your business"; "mind your own business" |
| n. (state) | 2. cephalalgia, head ache, headache | pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs. |
| ~ ache, aching | a dull persistent (usually moderately intense) pain. |
| ~ 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. |
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