If your hands are going numb, don’t automatically assume it’s poor circulation or “just aging.” Numbness can have several causes, and the pattern matters.
Common possibilities
Carpal tunnel syndrome: Numbness or tingling mainly in the thumb, index, middle, and part of the ring finger, often worse at night.
A pinched nerve in the neck: May cause numbness traveling from the neck or shoulder down into the arm and hand.
Ulnar nerve compression: Often affects the little finger and part of the ring finger, particularly when the elbow stays bent for long periods.
Diabetes or vitamin B12 deficiency: Can cause nerve symptoms, sometimes affecting both hands and feet.
Temporary pressure on a nerve: Sleeping on your arm or keeping your wrist in an awkward position can cause brief “pins and needles.”
When it could be an emergency
Sudden numbness in one hand or arm, especially when accompanied by facial drooping, difficulty speaking, severe dizziness, vision problems, or weakness, can be a sign of a stroke. Seek emergency medical care immediately. (stroke.org
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Also seek prompt medical attention for numbness accompanied by new significant weakness, severe chest pain, or difficulty breathing.
If numbness keeps returning, lasts for a long time, is getting worse, or is disturbing your sleep, arrange a medical evaluation. The cause can often be identified from the distribution of the numbness, your symptoms, examination, and sometimes blood tests or nerve testing.
