Hand and foot numbness can be an early warning sign of several diseases:
Numbness in the hands and feet can be a precursor to a stroke, especially if it appears suddenly on one side. People with hypertension, hyperlipidemia, and diabetes need to be particularly vigilant about this symptom.
Prolonged high blood sugar can damage the nervous system, leading to numbness in the hands and feet. Peripheral neuropathy caused by diabetes is a common reason for this symptom.
Cervical spondylosis may compress nerve roots, causing numbness in the hands and feet. It can also lead to headaches, dizziness, and numbness and pain in the upper limbs.
Lumbar disease, especially herniated discs or bone spurs, can compress nerve roots, leading to numbness in the lower limbs.
Peripheral neuropathy can affect multiple nerves, causing symmetrical pain and sensory abnormalities, with numbness in the hands and feet being a common symptom.
In addition to stroke, other cerebrovascular diseases such as transient ischemic attack (TIA) can also lead to numbness in the hands and feet.