Symptoms may become worse when the elbow remains bent for long periods.
This can happen during sleep, when talking on the phone, or when resting your elbow on a hard surface.
Over time, significant ulnar nerve compression can also cause hand weakness.
If you frequently experience numbness in the ring and little fingers, especially with weakness or difficulty gripping objects, it is worth getting evaluated.
5. Diabetes Can Affect the Nerves
Persistent numbness in the hands can sometimes be related to diabetes.
High blood glucose over time can damage nerves and the small blood vessels that supply them.
This is known as diabetic neuropathy.
Although diabetic peripheral neuropathy often begins in the feet and legs, the hands can also become affected.
Symptoms may include:
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Numbness
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Tingling
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Burning
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Pain
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Increased sensitivity
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Reduced ability to feel temperature or touch
People with diabetes may not always notice nerve damage early.
That's why regular medical follow-up and blood glucose management are important.
If you have diabetes and notice new or worsening numbness, tell your healthcare professional.
6. Vitamin B12 Deficiency May Affect Nerve Function
Certain nutritional deficiencies can affect the nervous system.
One particularly important example is vitamin B12 deficiency.
Vitamin B12 is involved in maintaining healthy nerve cells and producing blood cells.
A deficiency can contribute to neurological symptoms such as:
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Numbness
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Tingling
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Balance problems
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Weakness
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Fatigue
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Cognitive changes
B12 deficiency can occur for several reasons.
Some people don't consume enough B12 in their diet, while others have difficulty absorbing it.
Certain medications and gastrointestinal conditions can also interfere with B12 absorption.
If numbness is accompanied by unexplained fatigue, weakness, balance problems, or dietary risk factors, a healthcare professional may consider blood testing.
Don't automatically assume you need high-dose supplements, though.
The appropriate treatment depends on whether a deficiency actually exists and what caused it.