hello doctor ,, about one year ago an allergy started with no cause .. so i went to the doctor and he said i have urticaria ... so i started to take levar ,, after one month a headache started .. at first it was mild .. then it started to get worse .. everyday 24/7 ... so in the summer i had a c-t scan for the brain ... the doctor said everything is fine .. then about 3 months ago it got really worse .. i couldn t take it anymore .. so i went to e.n.t doctor and he said i had a sinus infection also deviation in the nose .. so i started taking treatment . it got better .. but still .. there is a headache .. about 5 days ago it got worse again and the doctor said its a sinus infection again .. !!! the headache is chronic .. ps. i had a blood test .. and everything was ok ..