Symptoms begin with vision blurring in both eyes for 30 mins- hr then becoming clear followed by a very intense headache in the left temple that usually last several hours. As headache begins, a numbness and tingling begins with my right thumb then spreads across the hand to the pinky finger and down to the elbow. Numbness and tingling generally last about 5-10 mins. This has occurred 3 times in last 5 days.