What causes pinky and ring finger to go numb?

Ulnar Nerve: When your thumbs point outward from your body, the bones of the forearm open: the ulnar side has the nerve from the elbow (the funny bone sensation). The roots are in the neck, the fibers forom the c-8 & t-1 exit, and form the nerve on the other sie of the brachial plexus. Stretching anywhere along the nerve causes numbness.

Nerve problem: Numbness can occur from various reasons. Some potential causes include vitamin deficiency, nerve damage, nerve compression, alcohol over consumption, side effects of different medications, or as a result of different systemic medical conditions such as diabetes. Get evaluated by a professional to determine the diagnosis. Treatment is based on the diagnosis.

Nerve compression : Numbness to the small and ring finger is often due to nerve compression of the ulnar nerve at the elbow called cubital tunnel syndrome. A hand surgeon can evaluate this with exam and additional nerve tests to determine if you do have this syndrome and then give appropriate treatment. New minimally invasive surgery has decreased the recovery after cubital tunnel surgery.