<unk>  is a recognized ICHD (International Classification of Headache Disorders) classification. Over the years different sets of diagnostic criteria have been proposed and revised by the major experts of headache disorders. The term<unk>  first appeared in the ICHD 2nd edition in 2004. It was defined as a secondary headache, with the aim of emphasising excessive drug intake as the basis of this form of headache. The two subsequent revisions of the diagnostic criteria for<unk>  (2005 and 2006) refined and extended the definition of the condition on the basis of both its chronicity (headache on more than 15 days/month for more than three months) and drug classes, thereby identifying the main types of<unk> . In the case of ergotamine, triptans, opioids and combination<unk> s in particular, intake on > 10 days/month for > 3 months is required, whereas simple analgesics are considered<unk> d when they are taken on > 15 days/month for >3 months.
Medication overuse headache
Lupus headache
Vascular headache
Cluster headache
Cervicogenic headache
External compression headache
Cold-stimulus headache
Red wine headache