Expert answer:
The lack of sensitivity in the fingers can be caused by problems in the innervation of the upper limb (arm, forearm and hand). It is often accompanied by decreased strength, tingling and numbness, and may be related to situations in which compression or injury of the nerves of the limb occurs.
Diseases that may cause lack of sensitivity in the fingers:
- carpal tunnel syndrome: compression of the median nerve in the carpal tunnel, located in the wrist, and innervating the fingers,
- cervical disc herniations: compression of the nerves that leave the cervical spine and that connect to the nerves that innervate the hands,
- lesions of the brachial plexus: set of nerves (radial, ulnar, axillary, musculocutaneous and medial) that act on the upper limb,
- peripheral neuropathies: nerve damage that can be caused by diabetes, alcoholism, and leprosy.
The general practitioner or neurologist is the physicians indicated to diagnose and indicate the appropriate treatment for the lack of sensitivity in the fingers.
