There are different types of headaches and different factors causing it. So, a headache caused during a migraine will be different from the headache caused by eating something very cold. Here are 5 lesser-known causes of headaches:

* Migraine: Migraines cause recurring types of headaches that can be severe and accompanied by nausea and vomiting. Triggers for this could be stress, hormonal changes, and sleep disturbances.

* Stroke: In the early stages of stroke, a patient may experience an intense headache followed by nausea and vomiting. A stroke happens when the blood flow to the brain is interrupted.

* Brain freeze: Have you got a headache after eating an ice cream or drinking a smoothie? It can be caused by problems in a facial nerve or the cold’s effect on blood vessels.

* Caffeine withdrawal: Caffeine withdrawal can cause a lot of headaches as coffee can constrict or relax your vascular system, as well as affect the signalling chemicals in the body.

* Altitude headaches: Ever gone on a flight and felt a headache coming on? Headaches can take place during landing or take-off and can be caused by the shifting gravity.

* Dehydration: Dehydration can cause headaches . It occurs when you lose a substantial part of water and electrolytes from your body


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