Numbness of the left hand may be caused by improper posture, or it may be caused by central nervous system diseases such as cerebral infarction and peripheral nerve diseases.
1. Physiological factors: for example, the hand is in a state of mechanical pressure for a long time, resulting in poor blood circulation caused by numbness, which is a normal phenomenon.
2. Pathologic factors:
(1) central nervous system diseases: for example, acute cerebral infarction, cerebral hemorrhage, etc., leading to the patient’s sensory nerves are damaged, the patient will be manifested as numbness in the left hand, this symptom persists, can be clarified through the head CT or head magnetic resonance examination, and need to be actively treated.
(2) Peripheral nerve diseases: for example, cervical spondylosis compression of nerves, peripheral neuritis, tennis elbow, mouse hand, etc. These diseases will squeeze and stimulate the peripheral nerves, which may lead to numbness in the left hand and arm.
Therefore, after excluding physiological factors after the appearance of left hand numbness, you should go to the hospital in time to find out the cause of the disease and treat the cause.