For some, multiple myeloma's impact reaches down the spine, pressing against nerves and manifesting as weakness or numbness in the legs. This specific symptom is a direct consequence of nerve compression, a condition that demands immediate attention to prevent lasting damage. Unlike generalized muscle pain, this weakness or numbness can significantly impair mobility and quality of life. If you experience these sensations, especially in conjunction with sudden severe back pain, it's a signal to seek medical advice promptly.

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