[Skin Concerns] any idea what this thing is on my hand? It came out of no where a few days ago.

Beauty Tips For Body Care
https://imgur.com/gallery/7VNxZIt's actually pretty flat in person and gets a little itchy if I touch it. I don't think it's a mosquito bite. It feels a little rough in comparison to the rest of the skin on my hand. I'm not sure if this is the right subreddit to post this. Thanks!
Girls Blog 2015
Submitted by jen_wexxx