Does Low B12 Make Your Hand Curl?
I asked Google AI this question and received this answer.
While “curling” is not a standard medical term for a B12 symptom, a severe deficiency can cause several neurological issues that may make your hand feel like it is curling, locking, or losing control.
Vitamin B12 is essential for maintaining the myelin sheath that protects your nerves. When this sheath is damaged, it can lead to various hand-related symptoms:
“Locking” or Stiffness: Some patients report a “feeling like locking of fingers” or significant clumsiness.
Useless Hand Syndrome: A rare but documented manifestation where a person has extreme difficulty performing fine movements with their hands, often due to spinal cord involvement from the deficiency.
Muscle Spasms and Cramps:
Low B12 can cause muscle cramps and involuntary movements that might cause the hand or fingers to contract or “curl”.
Paresthesia: The most common early sign is “pins and needles” or tingling in the hands, which can progress to numbness and a loss of coordination.
Muscle Weakness: General weakness in the limbs can make it difficult to hold objects, leading to a perceived loss of hand function.
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