Since 3 days, i have been experiencing severe headache..it was continuous on first day but i last two days, it occurs after afternoon..it is throbbing type of pain...commonly on the right side of the head..this type of pain is experienced twice a year since 2 -3 years but it regresses after 2-3 days on its own...but last time i.e. few months back it stayed for more days I am dentist by profession; however,right now my job profile is such that i need to work on desktop for 8 hours... I m doubtful..is it migraine, weakness of eye sight or anything else? Also which tests should i go for to know the exact diagnosis?