What happened to the fever and diarrhea

Fever and diarrhea are common gastrointestinal symptoms, and various gastrointestinal disorders, as well as systemic diseases, may cause this symptom. For example, various acute and chronic enteritis, as well as improper diet, or inflammatory bowel disease, such as ulcerative colitis, Crohn's disease, or colon cancer, rectal cancer, gastrinoma, and endocrine metabolic system diseases, including diabetes, hyperthyroidism, or autoimmune diseases, such as systemic lupus erythematosus, systemic vasculitis, etc., may cause similar symptoms. Therefore, it is necessary to improve the relevant examination for clarification, but also to treat the primary disease.