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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Tingling In Legs, Feet, Arms And Teeth?

My wife has tingling in both of her legs and feet as well as her arms. Now she says her teeth are tingling. She takes med for depression and gives herself shots for B12. What could be the cause? Her blood work came back normal, she went to th doc Thursday
Mon, 11 Apr 2016
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Dietitian & Nutritionist,  's  Response
Welcome to HCM,
Generally, tingling is associated with B12 deficiency or neuropathy from diabetes.

Normal, or definition thereof, might be the issue.There’s considerable disagreement about normal levels of B-12. Most labs test B-12 levels between 200 pg/ml (picograms per milliliter) and 800 pg/ml. Someone at 250 pg/ml would be classified as normal, but symptoms can start appearing at 350 pg/ml. In Japan, normal B-12 was recently raised to 500 pg/ml and higher. We’ll see this type of erroneous overreliance on “normals” in other frequently missed diagnoses, like hypothyroidism, vitamin D deficiency, gluten intolerance, adrenal fatigue. Long-term B12 deficiency can cause permanent neuropathy. Too much B12 can cause symptoms.

It sounds like something is not right with the dosage or "normals" or that something else completely different is causing these symptoms.

There are other medications that can cause tingling as a side-effect. Perhaps you should seek a second opinion.

Please feel free to write back after the doctor's visit if you have more questions. Regards, Kathy Shattler, MS,RDN
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What Causes Tingling In Legs, Feet, Arms And Teeth?

Welcome to HCM, Generally, tingling is associated with B12 deficiency or neuropathy from diabetes. Normal, or definition thereof, might be the issue.There’s considerable disagreement about normal levels of B-12. Most labs test B-12 levels between 200 pg/ml (picograms per milliliter) and 800 pg/ml. Someone at 250 pg/ml would be classified as normal, but symptoms can start appearing at 350 pg/ml. In Japan, normal B-12 was recently raised to 500 pg/ml and higher. We’ll see this type of erroneous overreliance on “normals” in other frequently missed diagnoses, like hypothyroidism, vitamin D deficiency, gluten intolerance, adrenal fatigue. Long-term B12 deficiency can cause permanent neuropathy. Too much B12 can cause symptoms. It sounds like something is not right with the dosage or normals or that something else completely different is causing these symptoms. There are other medications that can cause tingling as a side-effect. Perhaps you should seek a second opinion. Please feel free to write back after the doctor s visit if you have more questions. Regards, Kathy Shattler, MS,RDN