what is it called when you calves get all tight when your sleeping and it hurts.

Question

i heard it could be blood clots or lack of potatisum

Answer 1

It's commonly called a charley horse.

http://www.nlm.nih.gov/medlineplus/ency/article/002066.htm

Answer 2

its not carley horse

Answer 3

I suggest you discuss this with your doctor.

It seems to me that the website accurately describes what you posted.