Numbness of the big finger may be caused by physiological factors, or it may be caused by transient cerebral ischemia, peripheral neuritis and other pathological factors.
1. Physiological factors: the big finger is in a position for a long time, resulting in local blood circulation, thus causing mechanical numbness of the big finger, usually after rest can be relieved.
2. Pathologic factors:
(1) Peripheral neuritis: Peripheral neuritis is caused by poisoning, nutritional and metabolic disorders, infections, allergies and other causes of multiple peripheral nerve damage, resulting in numbness of the big finger with pain, weakness and other manifestations.
(2) Transient cerebral ischemia: Transient cerebral ischemic attack due to temporary intracranial blood supply obstacle, causing local transient ischemic symptoms such as numbness of the big finger, transient darkness, visual and spatial disorders and other manifestations.
There are many causes of numbness in the fingers, and it is necessary to go to the neurology clinic in a timely manner to clarify the causes and achieve early detection and early treatment.