I've experienced dysesthesias that come and go in upper limb and an overactive bladder. Not diabetes. What else could it be? Ms?

Possible. MS would be included in one of the many possible diagnoses with these symptoms. Make sure you see your doctor and especially maybe a neurologist at some point.
Perceptive. You are perceptive on considerations. There are a number of things this could be including inflammatory disorders such as MS. Suggest you see your local PCP for further evaluation promptly.
See your doc. These are complex symptoms. See your primary care doctors for more evaluation.

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