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What causes tingling in the right arm?

Injury
An injury to the nerves in the arm, neck, shoulder, or even the back can cause a numbness sensation to set in the right arm. Injury can include compression of the blood vessels, an infection, or tissue scarring. Incidents such as frostbite, a herniated disk, or an animal bite may cause damage to the right arm.

Carpal Tunnel Syndrome
A common cause of temporary numbness of the right arm is carpal tunnel syndrome. As a specific injury to the median nerve at the wrist region, you may feel tingling and numbness in the lower arm as well as your hand and fingers. You may also experience pain with this disorder. It is associated with pregnancy, rheumatoid arthritis, and common with repetitive motion seen with rotation of wrist.

Nutrition Deficiency
We depend on essential nutrients such as vitamins B6, B12, B5, D, and C and pure minerals potassium, calcium, and phosphorous for proper functioning. A shortage of any of these can cause numbness in any part of our body, including the right arm.