Invasive Asian insects spreading across 20 US states can cause hives, vomiting — and even death By McKenzie Beard Published June 13, 2025, 3:50 p.m. ET ...

To perform a skin biopsy, your dermatologist removes a small bit of affected skin so that it can be examined under a microscope. While having answers to these questions and test results is helpful, it ...

Unlike acute cases of hives, physical urticaria is not caused by allergies, viral infections, or any internal causes. Instead, it’s caused by exposure to various forms of physical stimuli.