Apart from the risk of stroke attributable to high blood pressure and blood vessel disease, sleep apnoea is also a risk factor for an irregular heart rhythm that can predispose clots to form in the heart, before shooting off to obstruct blood vessels in the brain. Sleep apnoea is also of relevance to headaches such as migraines and morning headaches, can result in increases in pressure inside the skull and can worsen the effects of Parkinson’s disease.

