Tension-type headaches are the most common type of headache and the one we think of as a normal, everyday headache. Most people are likely to have experienced a tension headache at some point;
Stress
Bad posture
Sleep depravation
Eyestrain
de-hydration etc etc.....
If you only get occasional headaches there is usually no need to see your GP. However, get medical advice if your headaches:
•are frequent or severe
•come on suddenly and are unlike anything you have had before
•are accompanied by a very stiff neck, fever, nausea, vomiting and confusion
•follow an accident, especially if it involved a blow to your head
•are accompanied by weakness, numbness, slurred speech or confusion
Tension-type headaches aren't life-threatening and are usually relieved by painkillers or changes in lifestyle, hydrating yourself, try not to strain your eyes watching TV, reading or using computers