In patients with good health and no apparent primary underlying disease, a small amount of bad eggs may not cause significant poisoning, but sometimes infectious diarrhea may occur. In older patients with significant primary underlying disease, a large amount of bad eggs may cause poisoning. First, the patient may have symptoms of infectious diarrhea, such as nausea, vomiting, abdominal pain, diarrhea, acid reflux, heartburn, and in severe cases, mucus-purulent blood-like stools. For patients with previous history of cardiovascular disease, they may also have symptoms such as chest tightness, shortness of breath, palpitations, anterior heart discomfort, and in severe cases, cyanosis of the face and mucous membrane of the surrounding skin. In severe cases, dizziness, headache, and transient loss of consciousness may occur and must be treated in a hospital.