Left arm pain and numbness of fingers may be caused by physiological factors, cervical spondylosis, carpal tunnel syndrome, thoracic outlet syndrome and other reasons.
1. Physiological factors: For example, if you have been engaged in lifting heavy objects for a long time in the recent past, which leads to long-time over-exertion of the left arm, it may cause left arm pain and numbness of the fingers.
2. Cervical spondylosis: usually due to the presence of cervical disc herniation, is likely to compress the local nerve roots, may cause left arm pain, numbness of the fingers, may also be accompanied by neck pain, dizziness and other manifestations.
3. Carpal Tunnel Syndrome: this disease can make the patient’s median nerve compression, because the median nerve innervates the local function of the fingers, may cause finger sensory impairment, which may lead to numbness of the fingers, and in severe cases, it may be accompanied by the symptoms of left side or right side arm pain.
4. Thoracic outlet syndrome: the disease is usually caused by developmental abnormalities, repetitive injuries, which can lead to the brachial plexus nerve or subclavian arterial vein compression, which may cause left arm pain, numbness of the fingers, may also be accompanied by hand pallor, shoulder and neck pain and other symptoms.
Left arm pain and numbness of the fingers, to rule out physiological factors, it is recommended to seek early medical treatment, under the guidance of the doctor for targeted treatment.