Starting yesterday afternoon, I've noticed some strange red bumps that look like bug bites, but what's confusing me is that they don't itch at all unless I directly touch them. I've noticed about five of them so far - one on my left wrist, one on my right wrist, one on my elbow, and two close together on my upper arm - so as well as being non-itchy, they are mostly spread quite far apart. This and the lack of itching makes me doubt that they're bug bites, but could they be?
Here's an Imgur album I made with pictures of some of the strange hives (?) described above: https://imgur.com/a/yBSwx5Q
Thank you in advance for any help at all.
PS I tried to post this question and got redirected to make an account, so hopefully this doesn't post twice!