I've been feeling a wierd sensation in my head, as though something bursts, then I become numb or unresponsive. This lasts for about 5-8 mins and then i am alright. Frequency was like once in 10 days or so around 1.5 months back and now its mostly once or sometimes twice a week. Apart this, frequent headaches are common. Even after having a good night's sleep i feel a headache as soon as i get up. And sometimes towards the night. I get irritated easily and mood swings are too much sometimes, and this happens almost every single day.