Getting a Cramp in My Hand.

Recently, I get a cramp in my hand. That is very hard for me because I use my computer to do my homework everyday. I can't type words when I get a cramp in my hand. I asked friends who are online to improve this problem. They answered to take vitamin, iron. Also, they told me to eat fishes, but I don't like them. To improve my problem, I have to eat them, so I decided to eat fishes even if I don't like them. If you have a good other idea to improve this problem, could you tell me the way? [102 words]