If acute urticaria occurs, it is important to consider that it is caused by allergic problems, this condition is mainly due to the symptoms of increased vascular permeability of the skin and mucous membrane areas, and hot baths are generally not recommended. Because the hot bath will stimulate the skin, mucous membranes, so that the local vasodilatation, may aggravate the symptoms of increased vascular permeability. If it is in summer, you can consider taking a cool bath, but be careful to try not to use irritating soaps or shower gels to avoid causing symptoms to worsen. Acute urticaria, it is recommended to pay attention to rest, drink more water, you can also eat more fruits rich in vitamin C. Serious symptoms require timely drug therapy intervention, such as oral loratadine, you can also take calcium gluconate and vitamin C.