3 doctors weighed in:
What causes a painful muscle spasm in the calf muscle?
3 doctors weighed in

Dr. Susana Duncan
Physical & Rehabilitation Medicine
2 doctors agree
In brief: A charlie horse.....
Large muscles use a lot of energy to do work, and this is supplied by blood.
If the supply is not adequate their can be painful spasm; and if metabolites from heavy activity are not removed there can be spasm. Other causes can be a trapped nerve root irritating the muscle. Some people have greater likelihood of spasm due to underlying genetic causes.

In brief: A charlie horse.....
Large muscles use a lot of energy to do work, and this is supplied by blood.
If the supply is not adequate their can be painful spasm; and if metabolites from heavy activity are not removed there can be spasm. Other causes can be a trapped nerve root irritating the muscle. Some people have greater likelihood of spasm due to underlying genetic causes.
Dr. Susana Duncan
Dr. Susana Duncan
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