1 doctor weighed in:

Dark skin patch on index finger joint of both hands & mild pain. Also pain in right hand thumb base. No injury. I use phone a lot and deficit in vit d?

1 doctor weighed in
Dr. Ipe Kalathoor
Internal Medicine

In brief: Joint pain

The patch if new and persisting, you should see a doc.
Sometimes joint pains of hands could be from too much texting. Pain is not a symptom of vitamin d def.

In brief: Joint pain

The patch if new and persisting, you should see a doc.
Sometimes joint pains of hands could be from too much texting. Pain is not a symptom of vitamin d def.
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