“Numbness of the left big toe” or “numbness of the left bunion” may be related to trauma, lumbar disc herniation, diabetes, and so on.
1. Trauma: Numbness of the left big toe may occur after trauma to the toe if it is combined with nerve damage.
2. Herniated lumbar disc: If a patient suffers from a herniated lumbar disc, when the disc compresses the peripheral nerve roots in the lumbar region, it can lead to sensory disorders in the skin areas innervated by the nerve, causing numbness of the bunion.
3. Diabetes mellitus: Diabetes mellitus can cause peripheral neuropathy, the most common type is distal symmetric polyneuropathy, patients can have abnormal sensation of the extremities (numbness, burning, pins and needles, or the feeling of stepping on cotton), which may lead to numbness of the bunion.
Patients with left bunion numbness should go to the hospital to identify the cause of the disease and under the guidance of the doctor for standardized treatment.