For about 1 year and half I've been tormented by a headache and lack of concentration.(I.e. It's very hard for me to concentrate on the teacher when speaking in class,or to concentrate on meditation and so on)
Won't matter how long or often I sleep the situation is the same.I also get nervous very often.Medicines won't do much effect either.
It's not like a real headache,it is more like something that pisses me off really much.Some rare time when I feel no headache,however,my head feels really heavy.
My parents say it's because I spend most of my day in front of the PC,and I think so because the more time I spend,the more the head hurts,but anyway,it takes a spell to relieve me of this.