A tension is the most common reason for a headache. It can cause mild, moderate or intense pain in your head, neck, behind your eyes. The majority of people who suffer from tension headaches, observes it occurring once or twice in a month on an average. However, tension headaches can also be chronic; it can last for more than 15 days a month. It is uncomfortable and tiring, but do not usually disturb sleep. People can even carry on working with a tension headache.
Migraine is a neurological disorder which is characterized by recurrent moderate to severe headaches. This condition is often associated with a number of autonomic nervous system symptoms. Migraine attacks can cause significant pain for hours to days. The attack of migraine can be so severe that the affected person thinks of finding a dark and quiet place to lie down.