Numbness of the dorsum of one foot may be caused by physiological factors, trauma, diabetic peripheral neuropathy, lumbar intervertebral disc herniation and other reasons.
1. Physiological factors: usually due to prolonged sitting position, such as cross-legged sedentary, sitting posture, etc., may lead to one side of the lower limbs of the venous return is not smooth, which may cause a dorsal foot numbness.
2. Trauma: the dorsum of the foot is subjected to external pressure, resulting in damage to the dorsal nerve, which may cause numbness of the dorsum of one foot, and may also be accompanied by localized swelling, bruising and other manifestations.
3. Diabetic peripheral neuropathy: due to peripheral neuropathy, resulting in peripheral nerve blood circulation is not good, it may cause a dorsal foot numbness, but also may be accompanied by burning sensation of the foot, ants and other manifestations.
4. Lumbar disc herniation: the herniated lumbar disc is easy to compress one side of the nerve root, it may cause one foot dorsal numbness, may also be accompanied by radiating pain in the leg, lumbago and other symptoms.
The numbness of the dorsum of one foot, after excluding physiological factors, should be taken seriously, and seek medical treatment as soon as possible to prevent delays in the condition.