There's a list of various possible causes here: https://www.healthline.com/health/headache/early-morning-headaches
But it could be something much more benign and much more easily solved.
Try making it a habit to drink a large glass of water as soon as you get up, and see if that helps. We all lose water overnight, some from sweat and some from exhaling water vapour. So, even if you go to bed properly hydrated, after eight hours of lying there and breathing, you can wake up dehydrated, and headaches are a symptom of dehydration.
In fact, try drinking a large glass of water first every time you get a headache rather than automatically reaching for a pill. I started doing this after seeing a doctor on UK TV suggest it, and I've found it often helps. It won't help with sinus, tension or other types of headaches, but I've been surprised by how often it does work.
Is it normal to get headaches when getting 8 hours of sleep
← View full post
It's not uncommon.
There's a list of various possible causes here: https://www.healthline.com/health/headache/early-morning-headaches
But it could be something much more benign and much more easily solved.
Try making it a habit to drink a large glass of water as soon as you get up, and see if that helps. We all lose water overnight, some from sweat and some from exhaling water vapour. So, even if you go to bed properly hydrated, after eight hours of lying there and breathing, you can wake up dehydrated, and headaches are a symptom of dehydration.
In fact, try drinking a large glass of water first every time you get a headache rather than automatically reaching for a pill. I started doing this after seeing a doctor on UK TV suggest it, and I've found it often helps. It won't help with sinus, tension or other types of headaches, but I've been surprised by how often it does work.