Too much too soon, maybe ?, likely either aggravating the tendon or nerve.

I suffered from this all spring and summer, a shooting pain right below the elbow, turned out to be the nerve. The pain was right up into the hand. Lots of computer mouse usage started it as well as cycling aggravating it.

I’ve 29 riding seasons and just chalk this up to age (62).

I took a vacation, 2 weeks, no riding and no computer, lots of ice and it’s going away.