[Noah930]

Those black areas look like they're somewhere on the triceps--pretty far away from the elbow. If so, probably some general musculoskeletal strain, as a triceps tear is pretty unusual, there. I'd stick with Tobra's recommendation, in the meantime.

The hand/fingers are numb because of nerve irritation. Between the olecranon and medial epicondyle is the cubital tunnel. That's where the ulnar nerve runs. In layman's terms, that's the "funny bone." With elbow inflammation, the nerve can become pinched in the cubital tunnel. You feel that as numbness and tingling in the distribution of that nerve: the small finger, ring finger, and pinky side of the hand.

Most likely, it'll resolve as the elbow swelling resolves. You can try to sleep with your arms straight in the meantime (most of us sleep with our arms curled, which stretches the ulnar nerve as it runs the "long way" around the axis of rotation of the elbow, and further irritates it). And avoid resting your elbow/nerve on anything (i.e. table, armchair) for awhile. If it still bothers you, then you can go see an upper extremity surgeon about cubital tunnel syndrome.

If you want to see someone, I can give you a few names to call.