TweetCould be tendonitis. sounds like it! you probable could get a shot for the immediate PAIN,STRESS but need to take some down time to allow to heal.
In the forearm does it feel like a large cord . I had to have muscle stripping performed. it wasn't pleasant.
Muscle Stripping*involves deep tissue manual therapy to clear out the adhesions (scar tissue) formed inmuscle*fiber during physical activity. The technique is more effective than a deep tissue massage or a sports massage, as it elongates the*musclesand removes the knots.

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