Why are these areas itching so much?


I just got back from the coast and this is weird but my genital area started itching then a little bit on my stomach and then my left eye started itching like crazy! There is nothing visually wrong with my genital area at all but my eye is slightly swollen (tiny bit) and a small spot on my stomach has what looks like poison oak or ivy. but i did not touch any bushes or plants it was just the hotel and the beach and pool and spa. Any suggestions would be much appreciated