Tight clothing temporarily restricts blood flow to the concerned area. So when the tight garment is removed there is a release of circulation and as the residual feeling of tightness lessens ,an urge to itch the area occurs. It’s best to avoid itching this area as it really isn’t itchy, it only feels itchy. Apply a moisturizing lotion instead. Also , some people have something called pressure urticaria , which means that anything that puts pressure on their body is liable to cause a red wheal like rash and that actually itches. Avoid tight clothing if you have this. You can use cool compresses to calm the itching down and also use calamine lotion if the itch is too bad.
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