What causes sudden fever, vomiting, and diarrhea?

Generally speaking, fever refers to an elevated body temperature. Sudden fever, vomiting, and diarrhea may be caused by improper diet, stress response, gastrointestinal-type cold, acute gastroenteritis, food poisoning, bacterial dysentery, etc. If discomfort occurs, it is recommended to seek medical attention promptly. Detailed explanations are as follows:

1. Improper Diet

Long-term overeating or excessive consumption of spicy, irritating, raw, cold, or greasy foods may irritate the gastrointestinal tract and damage the gastrointestinal mucosa, thereby causing symptoms such as vomiting, abdominal pain, and diarrhea. At the same time, improper diet may lead to a decline in the body's immunity, triggering systemic symptoms such as fever. It may be accompanied by stomach discomfort, bloating, and loss of appetite. One should maintain regular eating habits, avoid overeating, reduce the intake of spicy, irritating, raw, cold, or greasy foods, and maintain a bland and easily digestible diet.

2. Stress Response

When experiencing intense psychological or physiological stress, such as excessive mental tension or after strenuous exercise, the body may generate a stress response. This response can cause abnormal contractions of the gastrointestinal smooth muscles, leading to vomiting and diarrhea. Meanwhile, increased secretion of stress hormones in the body may also cause elevated body temperature. One should learn to manage stress effectively, avoid long-term high-pressure states, reasonably schedule exercise and rest times, avoid overexertion, and maintain a positive and optimistic mindset to enhance psychological resilience.

3. Gastrointestinal-Type Cold

Gastrointestinal-type cold is caused by external environmental factors, such as cold exposure, fatigue, or unclean diet, which lead to gastrointestinal dysfunction, usually accompanied by upper respiratory infection symptoms. These factors cause abnormal contractions of gastrointestinal smooth muscles, increased gastric acid secretion, and accelerated intestinal motility, thereby causing vomiting and diarrhea. At the same time, the body's immune response may cause fever. Treatment may follow medical advice using medications such as paracetamol, montmorillonite powder, and domperidone tablets.

4. Acute Gastroenteritis

Acute gastroenteritis is usually caused by bacterial, viral, or parasitic infections, such as Salmonella, rotavirus, etc. After pathogens invade the gastrointestinal tract, they multiply extensively and release toxins that irritate the gastrointestinal mucosa, leading to inflammation and edema, thereby causing vomiting and diarrhea. At the same time, pathogens and inflammatory mediators can cause dysfunction of the body's temperature regulation center, leading to fever. It may be accompanied by abdominal pain, bloating, nausea, and loss of appetite. Treatment may be guided by a physician using medications such as amoxicillin capsules, cefradine capsules, and montmorillonite powder.

5. Bacterial Dysentery

Bacterial dysentery is mainly caused by bacteria of the Shigella genus. The bacteria multiply extensively in the intestines, releasing toxins that damage the intestinal mucosa, leading to inflammation, ulcers, and bleeding, thereby causing vomiting and diarrhea. The toxins may also cause systemic toxic symptoms, including fever. It may be accompanied by abdominal pain, mucus-filled pus and blood in the stool, and other symptoms. It is recommended to use medications such as ceftriaxone sodium injection, azithromycin tablets, and live combined Bacillus subtilis and Enterococcus faecalis granules for symptomatic treatment under medical guidance.

In daily life, one should ensure adequate sleep, maintain a balanced diet, strengthen physical exercise, and improve the body's resistance.