Spinal stenosis - National Library of Medicine - PubMed Health: "Symptoms
Often, symptoms will get worse slowly over time. Most often, symptoms will be on one side of the body or the other, but may involve both legs.
Numbness, cramping, or pain in the back, buttocks, thighs, or calves, or in the neck, shoulders, or arms
Weakness of part of a leg or arm"
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