Allergic to heat?

After a tough day of training yesterday in Louisville, I woke up this morning to a special surprise.

What the heck???

HIVES

They are back. What the heck? Two days off of prednisone and I'm breaking out again only worse. So far it's mainly on my legs.

Yesterday during my ride in Louisville, I used a new spray suntan lotion by Neutrogena and I still broke out. I doubt it's the suntan lotion.

My dear, sweet husband ran to Wal-Mart and picked up Benadryl for me. I'm hoping it does that trick; otherwise, I'll be calling my doctor to see what else we can do other than prednisone.

Could it just be a reaction to the heat? If so, that is going to make this a long, itchy summer.