I'm a 21 year old female with height 5'7" and weight 106 kg. It's been a month that I started having this issue of getting itchy all over my body at random times. This stayed for a couple of days and doesn't happen anymore. However, now it's been a few weeks that whenever I scratch anywhere on my skin with a bit of force, especially the areas between my chest and knees and also my arms, it turns red from where I scratch it and then my skin swells a bit exactly from where I scratch. Yesterday I was using a comedon extractor on my nose for the whiteheads and after a few minutes my skin swelled up from there too. So now even if I pinch myself with force, it leaves some swelling. It doesn't hurt and reduces back to normal in 10 to 15 Minutes. Kindly guide me as to what should I do. Thank you so much.