Yes, I think! I was wearing leggings on Friday, which in hindsight wasn't a great idea. I wasn't sure if they were insect bites at first but they are really itchy and I've had to put some calamine lotion on. Weirdly, I have 3 on and around my left knee but nowhere else. In fact I've just had to put some more lotion on in the last few minutes after my nightly loo stop. Have you been putting anything on yours? xxx