After Pinburgh last year I came back home with exactly those symptoms. I was calling it tennis elbow at the time, but I’m no expert on the difference
I played a couple of events bearing the pain, but it just made it worse, and I regretted playing those events in the six months that followed. I took a very long break from competition and it’s just about gone now
I found some advice that periodically rubbing the elbow (such that you get a mild tingle of pain) helps the healing, and I’d agree with that.
Support bandage did nothing for me, though it might help stop it from getting worse from any mild day to day strains on the elbow