I had a problem that started as a pain under my tricep above the elbow that started after neutral grip pull ups. when it got really bad my fingertips would go numb. It kept on for a while and I ended up taking off for about a month. Between taking off and starting to use tennis elbow straps above the elbow it healed up.. so I thought.

The same pain started again after deadlifts on the arm with the reverse grip. I'm using a elbow "brace" that tightens above and below the elbow. the area under the tricep is better now for the most part but now the pain is in the outside of the joint itself.

Supination seems to inflame it the worst and its mostly pulling exercises that hurt it. Otherwise it is just a dull pain throughout the day hurting more when I straighten it out.