The first doctor he visited told him it was caused by a muscle strain.
Such muscle strains are usually treated with physical therapy and rest.
He leaned his head on one side, as if to ease a muscle strain.
People often think it's a disc problem or muscle strain.
For muscle strains, it will be little if any help.
By far the most common cause of back pain is muscle strain.
I can feel you inside me; you're like a muscle strain.
Like muscle strain, it would pass with a little rest, he suspected.
A muscle strain or bruise, even if there is no break in the skin.
But it is also a time of little sleep, hard work and muscle strains.