Numbness of the left arm and leg may be related to cerebrovascular disease, radiculopathy, lumbar disc herniation and so on.
1. Cerebrovascular disease: numbness of the left arm and leg may be caused by cerebrovascular disease, such as subarachnoid hemorrhage, intracerebral hemorrhage, cerebral infarction and so on, and can be diagnosed by magnetic resonance imaging (MRI) and cranial CT.
2. Neurogenic cervical spondylosis: generally caused by a herniated cervical disc that compresses the nerves innervating the upper limbs on the left side, causing numbness in the left arm.
3. Lumbar disc herniation: After lumbar disc herniation, the nerve root on the lumbar side is compressed, which can cause the symptom of numbness of the left leg.
It is suggested that the symptoms of numbness of the left arm and left leg should go to the hospital for examination in time to find out the cause of the treatment under the guidance of the doctor.