This is what I recall being taught as a kid with bad allergies and various skin conditions. Rubbing can be helpful. If so, consider rinsing with water to make

This is what I recall being taught as a kid with bad allergies and various skin conditions. Rubbing can be helpful. If so, consider rinsing with water to make sure you don't have any residual thing there upsetting your skin. Scratching through fabric is difficult because, if it does work, it could also trap the irritant in the fabric.