Numbness of the right leg at night in bed is not a sign of any disease, it may be of lumbar disc herniation, sciatica, cerebral infarction and other diseases. Symptoms 1. Lumbar intervertebral disc herniation: due to the degeneration of the intervertebral disc, fibrous ring rupture, nucleus pulposus protrusion and irritation or compression of the nerve root of the syndrome, often showing lumbar pain, radiating pain in the lower limbs, lumbar spine mobility reduction, etc., can appear at night to sleep on the right leg numbness. 2. Sciatica: caused by osteophytes, spinal stenosis, infectious diseases, trauma, etc., often showing pain and numbness in the buttocks, the back of the thighs, and the outer side of the calves. 3. Cerebral infarction: due to various reasons of blood supply obstacles in the brain, resulting in local brain tissue ischemia, hypoxic necrosis, and the corresponding neurological deficits in the syndrome, often showing blurred consciousness, hemiparesis, aphasia, numbness of the limbs, which can occur in the night time while sleeping. Therefore, if there is a numbness of the right leg when sleeping at night, it is recommended to choose to timely consult a doctor, follow the doctor’s instructions to standardize the examination, and then targeted treatment.