Which is the best medicine for headache? Hello, Age: 23 (male) Height,Weight: around 5.10 , 50KG every time i walk under heavy sunlight for 30 mins or more with empty stomach .. i gets headache which results into vomiting no matter i eat something after sometime or not. Sorry, i am not able to explain correctly. But please try to understand via below example: I wake up at 8-9 am. have tea/coffee/milk till 10 am. then bathing and all till 11.30 am. then after that if i went outside in sunlight with empty stomach for 30 mins or so .. i gets headache for sure for whole day, no matter if i eat after some time or not, and that lead to vomiting.