What if you have an allergic reaction to tennis balls?

Answer 1

If you're asking how to treat it- take benodryl to temper the reaction as an immediate, temporary solution, but I would suggest telling a doctor about it for more informed, long-term guidance.

If you're asking why it might be happening- It's possible that you're allergic to latex, as tennis balls are made from latex, and latex is a common, known allergy for a number of people. Do you have allergic reactions to anything else, such as balloons or disposable gloves? If so, it's most likely a latex allergy. Again, I would seek advice from a doctor regarding the issue.