Ulnar neuropathy at the elbow
Idiopathic ulnar neuropathy at the elbow is a condition where pressure on the ulnar nerve as it passes through the cubital tunnel causes ulnar neuropathy. The symptoms of neuropathy are paresthesia (tingling) and numbness (loss of sensation) primarily affecting the little finger and ring finger of the hand.
Source: Wikipedia — Ulnar neuropathy at the elbow (CC BY-SA 4.0)