If your hands are going numb, the cause can range from something temporary and harmless to a condition that needs medical attention.
Common possibilities include:
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Pressure on a nerve — such as sleeping on your arm or keeping your wrist bent.
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Carpal tunnel syndrome — often causes numbness/tingling in the thumb, index, middle, and part of the ring finger.
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Neck or nerve problems — irritation of nerves coming from the neck can cause symptoms down the arm and into the hand.
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Diabetes or vitamin deficiencies — these can cause peripheral nerve symptoms.
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Reduced blood flow — especially if the hand is cold, pale/blue, painful, or weak.
Seek urgent medical care if numbness begins suddenly, especially with weakness, facial drooping, trouble speaking, severe headache, chest pain, or shortness of breath, because these can be signs of an emergency.
If you tell me which hand/fingers are numb, whether it happens constantly or comes and goes, and how long it has been happening, I can help narrow down the possibilities.
