If you’ve ever woken up in the middle of the night or in the morning with a headache, don’t jump to the conclusion that it’s a migraine. It may be caused by a combination of oxygen deprivation and carbon dioxide buildup in the brain, which is responsible for the headaches. You should feel at your best when waking after a full night’s sleep, not in pain.
Testing and treating sleep disorders at Bumrungrad International Hospital’s Sleep Lab