No warning?

[Samw]

I don't wear gloves when I work on my tank. This weekend, I did a lot of work on the tank and I touched a lot of liverock and coral. Usually, I'll get a few allergic reactions from acros when I scrape them with my forearm. This time it happened again but I also felt some tingling on one finger (on the hand that I used to move liverock around). Later in the day, I had some tingling in my chest. I thought, "ah crap, something must have stung me". I sometimes get some tingling or feel a bit sick after I aquascape my tank (and I've read others do as well). Luckily, it only lasted 3/4 of a day before the tingling pain in my chest went away. Certainly, I was a bit anxious and thoughts of what am I going to do if this gets worse ran through my mind as I went to sleep.