Medical providers have known for over a century that there is an association between poor sleep and the frequency and intensity of migraine and other pain syndromes. Insomnia, also referred to as psychophysiologic insomnia by many, is one type of poor sleep. Other common types of sleep difficulties include sleep apnea, frequent snoring, and excessive daytime sleepiness.

Insomnia, of one or both types, is a common finding amongst individuals with chronic migraine. In many cases, insomnia may stem from other medical problems which cause chronic pain (making it difficult to sleep comfortably) or which disrupts normal sleeping patterns.

Reference : by Rashmi Halker, MD; Bert Vargas, MD; and David Dodick, MD,https://americanmigrainefoundation.org/resource-library/sleep-insomnia-migraine/ ,july 4th,2019