Numbness and weakness of the left hand may be caused by physiological factors such as prolonged pressure, or it may be related to cervical spondylosis or cerebral infarction and other diseases.
1. Physiological factors: If the left hand is subjected to pressure for a long time, it can lead to pressure on the nerves of the hand or poor local blood circulation, thus leading to the symptoms of numbness and weakness of the left hand.
2. Pathologic factors:
(1) Cervical spondylosis: if the cervical disc herniation compresses the brachial plexus nerve on the left side, it can lead to numbness of the left hand.
(2) Cerebral infarction: it can affect the sensory center in the brain, manifesting the symptoms of numbness of the left hand, and should go to the hospital for treatment in time, if not treated in time, hemiplegia and other serious consequences may occur.
When numbness and weakness of the left hand occurs, after excluding physiological factors, you should go to the hospital in time to improve the relevant examinations to clarify the cause of the disease and actively cooperate with the doctor’s treatment.