High blood sugar over time can damage nerves, especially in the extremities.
Signs:
- Gradual onset of tingling or burning
- Symptoms often begin in the feet but spread to hands
- Worse at night
🩺 If you have diabetes and frequent numbness, talk to your doctor about nerve health .
5. Vitamin B12 Deficiency
B12 plays a crucial role in nerve function and red blood cell production .
Deficiency signs:
- Tingling in hands and feet
- Fatigue
- Memory issues
- Balance problems
🥦 Especially common in vegetarians, vegans, and older adults.
6. Poor Circulation or Raynaud’s Phenomenon
Cold temperatures or stress can restrict blood flow to your fingers, causing them to go numb or turn white.
❄️ Raynaud’s disease causes this frequently — and may require lifestyle changes or medical treatment.
7. Multiple Sclerosis or Other Neurological Conditions
Persistent numbness — especially if it comes and goes in waves — could signal something more serious like:
- Multiple sclerosis (MS)
- Stroke or TIA
- Migraine with aura
- Parkinson’s disease (in rare cases)
🚨 Seek help immediately if paired with vision loss, speech trouble, or balance issues.
⚕️ When to See a Doctor
While occasional numbness is normal — especially from sleeping weird — persistent or recurring tingling isn’t something to ignore.
See a healthcare provider if:
- Numbness lasts more than an hour after movement
- One side feels worse than the other
- Pain or weakness accompanies the tingling
- You experience sudden loss of coordination or speech
- Tingling spreads to legs or face
Better safe than sorry — because some causes are reversible, while others worsen without treatment.
🧬 Other Possible Causes
🛡️ How to Prevent Hand Numbness & Tingling
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