calf muscle seizure

I am suffering a new ailment which I cant find literature for,  that is preventing me from running.  

I ran a couple of weeks ago in 5 to 8 degrees (Celsius) wearing shorts and I may have been underdressed. Its possible that my leg muscles got cold. Within five minutes I got a cramp in my calf that forced me to stop running.  The calf remained sore for the following week.  I applied Traumeil and waited it out. After a week the sensitivity had diminished enough for me to think I could run.  But about two or three hundred yards into my run the muscle seized up in a cramp again and I had to limp home.  Its almost like there is a knot in my calf preventing oxygen from getting to the muscle.

Any help understanding this problem would be greatly appreciated.

Thank you

[marcomel]

test

[marcomel]

ok .... i was playing a soccer game yesterday, when i suddenly felt my calf muscle tear or rip, tac tac tac, i tried to stretch and walk on it but the pain was 7-8 out of 10, what do you think happened?