My 11 years old son has experienced severe pain in his calf muscles for 4 times during last 4 years. The pain is so much that he is not able to walk. This pain generally has occurred after 3-5 days of fever. After two days episode of this severe pain, his pain gradually gets away without any medications. This happens almost once a year. When his CPK and CPK(MB) levels were checked through blood samples, they were extremely high during all these four occassions. Thus time CPK levels went upto 11,000(eleven thousand) also. The child is otherwise very very healthy and active. He plays cricket, football, etc. Shown him to Ortho, Neuro and Neuro (Muscles Specialist). They say he is fine when examined clinically. Got EMG done of his legs. Everything comes out normal. really really worried for my child... Please Guide and HELP how do I get clarity on this. Are there any further investigations to be done?????View Thread