Urticaria may lead to unformed stools. Urticaria may be triggered by drugs, food, systemic diseases, pathogenic microbial infections, etc. The patient’s skin may appear with different sizes of wind bumps, accompanied by varying degrees of itching. When acute urticaria is severe, it may irritate the mucous membrane of the gastrointestinal tract, leading to diarrhea, nausea, vomiting, and other symptoms, with unformed stools, and the involvement of the larynx may lead to respiratory distress and choking. Suffering from urticaria, we should go to the hospital in time, under the guidance of the physician to carry out the relevant treatment, so as not to aggravate the condition, usually pay attention to personal hygiene, avoid contact with items that may induce urticaria, avoid scratching the skin at the time of the onset of the disease, so as to avoid triggering the infection.