15. Autoimmune and Other Neurological Conditions Can Cause Numbness

There are many less common causes of persistent hand numbness.

Certain autoimmune diseases, neurological disorders, infections, and inflammatory conditions can affect nerves.

The pattern varies significantly.

Some conditions cause numbness on one side.

Others affect both hands and feet.

Some produce weakness, coordination problems, balance difficulties, or changes in reflexes.

This is one reason persistent numbness shouldn’t be self-diagnosed based on an online symptom list.

The same sensation can have many different causes.

16. A Herniated Disc Can Cause Arm and Hand Symptoms

Discs between the vertebrae in the neck act as cushions.

Sometimes a disc can bulge or herniate and irritate a nearby nerve.

Depending on which nerve is affected, symptoms may travel from the neck into the shoulder, arm, wrist, or fingers.

You may experience:

Symptoms may change depending on neck position.

A healthcare professional may perform a neurological examination and, when necessary, order imaging or other tests.