There are many reasons for the numbness and weakness of legs, and the common causes are transient ischemic attack, spinal cord lesion, lumbar disc herniation, diabetic peripheral neuropathy, hypokalemic periodic paralysis and so on.
1. Transient ischemic attack: common in patients with high blood fat and high blood pressure, there will be a transient lack of blood supply in the posterior circulation, which will lead to numbness and weakness of the legs, and even the performance of falling and fainting.
2. Diabetic peripheral neuropathy: it can be manifested as numbness and weakness of legs, and the numbness is mainly at the distal end of the limbs, which is symmetrical.
3. Hypokalemic periodic paralysis: patients can have a decrease in blood potassium, there are often triggers such as overeating or strenuous exercise before the disease, and some of the patients will have a family history.
4. Spinal cord lesions: most common in acute myelitis, can lead to bilateral lower limb weakness accompanied by significant sensory impairment.
5. Lumbar intervertebral disc herniation: leg numbness and weakness can be considered to be caused by lumbar intervertebral disc herniation compressing the nerves of the lower limbs, clinically common lumbar 4-5 intervertebral disc herniation is easy to compress the sciatic nerve, resulting in dull sensation of the lower limbs, numbness, and weakness of the symptoms.
Patients with numbness and weakness of the legs need to consult a doctor in a timely manner, under the guidance of the doctor, to improve the relevant examination, to clarify the specific causes of the systematic treatment.