Cucumber allergy

Luke had cucumbers this week 2 times. The 1st time he had them he woke up from his nap with what looked like welts on his face. Just one side of his face, and almost looked like bad irritation from dirty sheets since it was in the side he slept on. I thought nothing of it and it went away within an hr of him waking. He had cucumbers 2 hrs before his nap.

Yesterday he had cucumbers again at 4:30pm. About 5:30pm he started getting really whiney and was crying a lot, but this isn't unusual for him some evenings since he is hungry and tired. We just kept trucking along and had dinner. At 7 DH was undressing him his bath and noticed his legs were red. By the time he got out of the bath he had huge welts in his legs (like the size of a dime in some places) and they covered both his thighs, the backs of his calves and his buttocks. It was also very red and hot to the touch.

Being so close to bedtime, him never having Benadryl before and the fact that he was breathing fine I opted not to give Benadryl. I did put hydrocortisone cream all over his legs though. Within 10 minutes the redness was going away. It was clearly bothering him because he willingly let me put cream on him. He slept like crap last night, and was up at 4:30 this morning. Now he is acting normal and his legs are fine.

I've never dealt with a reaction before and this rash took up most of his lower half. Poor guy, doesn't seem like he can catch a break sometimes.