Numbness of the first three fingers of the left hand, usually the thumb, index finger and middle finger, may be a physiological phenomenon; may also be caused by diseases, such as carpal tunnel syndrome, cervical spondylosis, cerebral infarction, etc., and should be promptly consulted to find out the cause of the disease.
1. Physiological factors: If prolonged compression, such as incorrect sitting posture, long-term head down, etc., may lead to poor blood circulation in the fingers, resulting in numbness in the first three fingers of the left hand, which is a normal physiological phenomenon. You can move your fingers appropriately to improve blood circulation and relieve the symptoms.
2. Pathologic factors:
(1) Carpal tunnel syndrome: if the wrist is compressed for a long time, it is easy to make the median nerve compressed, and the symptoms of numbness of the first three fingers of the left hand may appear, and when it is serious, it may involve the forearm.
(2) Cervical spondylosis: Long-term strain, degenerative diseases and other causes can lead to disc herniation, so that the spinal cord and nerve roots of the cervical spine are compressed and the sympathetic nerves are stimulated, thus causing cervical spondylosis. It may cause numbness in the first three fingers of the left hand, often manifested as stiffness and pain in the head and neck.
(3) Cerebral infarction: It may be caused by atherosclerosis of large arteries, occlusion of small arteries and cardiogenic embolism, and the patient may experience numbness in the first three fingers of the left hand, as well as unfavorable speech, hemiparesis, and coma in severe cases.
In addition to this, it may also be caused by alcoholism, diabetes, menopausal syndrome and multiple peripheral neuritis, etc., and cannot be diagnosed directly based on a single symptom.
If there is numbness in the first three fingers of the left hand, after ruling out physiological causes, you should consult a doctor in time to avoid delaying your condition.