Numbness of the left ring finger should be alert to cervical spondylosis, diabetes mellitus, ulnar canal syndrome and other diseases, and should be promptly consulted to find out the cause of the disease.
1. Cervical spondylosis: such as neurogenic cervical spondylosis due to cervical intervertebral discs, intervertebral joints degenerative changes, involving the corresponding segments of the cervical nerve root root root root compression or irritation, thus causing numbness of the left ring finger, which can be manifested as unilateral or bilateral neck and shoulder pain, and upper extremity radiating pain, numbness and so on.
2. Diabetes mellitus: peripheral neuropathy caused by diabetes mellitus with predominant sensory and autonomic symptoms can cause numbness in the distal limbs, ants sensation and other strange sensations, and even spontaneous burning pain and lightning-like pain in the limbs.
3. ulnar canal syndrome: the ulnar nerve in or near the ulnar canal of the wrist, compressed by various reasons (such as bone disease, occupational lesions, congenital tissue abnormalities), can cause numbness, pain, weakness and so on on the ulnar side of the ring finger.
However, it is not excluded that other factors cause numbness of the left ring finger, and it is recommended that the patient consult the doctor in time to find out the cause and follow the doctor’s instructions to standardize the treatment.