Itchy skin around the body that appears as bumps after scratching is most likely hives. This condition usually begins with itchy skin followed by the appearance of wind clusters that appear bright red, pale white, or skin-colored. The size and shape of the bumps vary, as does the duration of the attack. As the disease progresses, the bumps gradually spread and can fuse with each other to form patches. The main point of differentiation is that the clusters do not leave traces on the skin after they have subsided, which can be distinguished from other allergic diseases. The main clinical manifestation of urticaria is intense itching that can affect sleep, but very few patients do not itch. Some patients may have nausea, vomiting, headache, head swelling, abdominal pain, diarrhea, and some may also have chest discomfort, pallor, accelerated heart rate, weak pulse, decreased blood pressure, shortness of breath, and other systemic symptoms. If only itchy skin is manifested, some antihistamines can be taken orally for symptomatic treatment such as desensitization and antipruritus. If systemic symptoms appear, even chest tightness and difficulty in breathing, you should go to the hospital promptly.