Why Is My Scalp Numb On The Right Side,some Times

why is my scalp numb on the right side,some times I get a sharp needle like pain and its gone AND IT FEELS LIKE MY SCALP HURTS IN DIFFERRNT PLACES ,I'V BEEN GETTING HEADACHES WHICH I'VE NEVER HAD BEFORE .WENT TO THE HOSPITAL AND THE DR.SEND I SOUNDS LIKE SHINGLES .TO WATCH FOR RASH ON MY NECK,FACE OR BODY I;VE HAD NO RASH ,IN 5 DAYS IF NOTHING SHOWS UP TO SEE MY FAMILY DR.TOMORROW I'M GOING TO FAMILY DR .