Numbness of the whole body and stiffness of the limbs during nervousness may be related to respiratory alkalosis, or it may be caused by epileptic seizures or Parkinson’s disease. 1. Respiratory alkalosis: When you are emotionally stressed, especially when you are overly emotional, you are prone to gasping for air, which is likely to induce respiratory alkalosis due to hyperventilation, and then you will experience generalized numbness and stiffness of the limbs. 2. Epileptic seizure: if there is a history of epilepsy, when the patient is too nervous and agitated, it is easy to induce epileptic seizure, which may show generalized numbness, stiffness of the limbs, and may be accompanied by convulsions, foaming at the mouth, etc., which is mainly due to the abnormal cerebral neuron discharges. 3. Spinal cord injury: may be trauma, infection, tumors and other factors related to the spinal cord can lead to damage to the spinal cord, there will be general numbness and stiffness of the limbs, may also be accompanied by sensory abnormalities, respiratory difficulties and other symptoms. Nervousness, numbness and stiffness of the limbs may also be caused by other reasons, if the symptoms continue to be unable to alleviate, you should promptly go to the hospital, after diagnosis, to give targeted treatment.