The postdrome phase of a migraine attack

The postdrome phase of a migraine attack is poorly studied. Indeed, the beta version of the ICHD-3 declined to define the postdrome in the glossary of terms;^{[IHS, 2013]} a deficiency remedied in the final version of the ICHD-3 classification publication.^{[IHS, 2018]}

There is considerable overlap in the symptoms that comprise the premonitory phase, and those experienced during the migraine postdrome.^{[IHS, 2018; Goadsby et al., 2017]} This overlap means that it is not clear whether the symptoms of tiredness, concentration difficulties, and neck stiffness are initiated in the premonitory phase before the headache and persist through to the postdrome phase, or whether these symptoms appear after the headache has abated.^{[Goadsby et al., 2017]}

References:
Goadsby PJ, Holland PR, Martins-Oliveira M. Pathophysiology of migraine: a disorder of sensory processing. Physiol Rev 2017; 97 (2): 553–622.

Headache Classification Committee of the International Headache Society (IHS). The International Classification of Headache Disorders, 3^rd edition (beta version). Cephalalgia 2013; 33 (9): 629–808.

Headache Classification Committee of the International Headache Society (IHS). The International Classification of Headache Disorders, 3^rd edition. Cephalalgia 2018; 38 (1): 1–211.

Other reference used on slide:
Giffin NJ, Lipton RB, Silberstein SD, et al. The migraine postdrome: an electronic diary study. Neurology 2016; 87 (3): 309–313.