! Do not say that you 'have headache'. Say that youhave a headache.
2informala problem that is annoying or difficult to deal with
a headachy feeling
WORD FOCUS: pain WORD FOCUS: pain pain in different parts of your body:headache, backache, toothache, earache, stomach ache, my leg/arm/neck etc hurts to feel a lot of pain:be in agony what you say when something hurts:ouchpain ➔ See alsopain
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.