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Usually such generalized tingling, are due to anxiety or fibromyalgia. However to state that we should first of all rule out the following like Thyroid issues, Anemia, Calcium and Vitamin D deficiency.
I would advise you to get following tests done:
1. Fasting Blood Sugar
2. Thyroid Profile
4. Serum Calcium and Vitamin D levels.
If any issues are found in your reports you would be treated accordingly. Otherwise your Doctor will treat you with SSRI's like Fluoxetine, Escitalopram.
I hope it helps.
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