#10 Post Head Injury
Ever had that headache where you feel dizzy or maybe confused post a head injury? Ya, it is because of concussion.

#9 Cluster Headache
If your headache is only confined to the area around one eye, it is called a cluster headache. This usually happens because of brain aneurysm.
Keep reading ahead to see more such deadly Headaches.

#8 Meningitis headache
A headache with stiff neck and fever is due to Meningitis headache. This is indeed very dangerous.

#7 Headache Post Workout
If you ever experience a headache after a nice workout session or post $ex it can be due to a brain aneurysm or a tumor.

#6 Blurring Vision
It is a sign of stroke, and it could also be accompanied with slurring of speech and mental confusion.

#5 The Thunderclap One
It is a sudden onset headache and the first 60 seconds are probably the worst. This can just signify a bad bleeding inside the brain.

#4 Post 50
Once you cross the age of 50, chances are high that you will experience consistent headaches. This is definitely dangerous and could indicate atherosclerotic changes in the large arteries of the brain.

#3 A Headache For More Than 24 Hours
This is one of the most dangerous type of headache. It's a sign of an ongoing stroke in your brain which is getting worse so visit an emergency room at your earliest.

#2 The 'Worst' Ever
If you get headaches on regular basis and suddenly experience the worst ever so far, just get yourself checked. It can be starting stage of tumor.

#1 A'Different' Kind
If you have a history of cancer, you will experience a different kind of headache that cannot be explained. Immediately rush to a Doctor. It might be a sign that the cancer is building up in the brain as a tumor.