I have a spasm in my top lid like cramp and twitches when I blink. Had it for around a week?

Common problem. Eyelid twitching (myokymia) is a common and largely unexplained problem. It usually goes away on its own but sometimes this takes 3-4 weeks. Occasionally, taking some calcium with magnesium supplements seems to help shorten the episode. Be sure to be getting plenty of rest and avoid extensive eye straining such as long hours in front of computer. If the problem does not resolve see your eye doc.