1. There is a history of unclean diet before the onset of the disease. Cold, fatigue, intestinal roundworm infection and malnutrition are the triggering factors.

2, abdominal pain The onset of the disease is rapid, sudden abdominal pain, can also be the first symptom, mostly in the umbilical region. At the beginning of the disease, it is often characterized by paroxysmal colicky pain around the umbilicus or in the middle and upper abdomen, which gradually turns into persistent pain in the whole abdomen with paroxysmal exacerbation. There may be different degrees of pressure pain. Heilongjiang Peace Hospital Online Experts

3, diarrhea blood abdominal pain can be diarrhea. Several times a day to more than 10 times a day, yellow watery stools, there may be foam or a small amount of mucus, severe cases can be with a small amount of pus and blood. The feces is paste-like with fecal matter at the beginning, and then gradually become yellow watery, followed by white watery or red bean soup and jam-like, and may even be fresh blood or dark red blood clots, and the feces is little and foul-smelling. There is no urgency. The amount of bleeding is variable; in mild cases, there may be diarrhea only, or only positive fecal occult blood without blood in stool; in severe cases, the amount of bleeding can reach hundreds of milliliters a day. The duration of diarrhea and blood in stools is only 1~2 days in short cases, but can be more than a month in long cases, and can be intermittent, or repeated multiple episodes. In severe cases of diarrhea, dehydration and metabolic acidosis may occur.

4, nausea and vomiting often occur with abdominal pain, diarrhea. Vomit can be yellow watery, coffee-like or bloody watery, can also vomit bile. Severe diarrhea can lead to dehydration, electrolyte disorders, and even shock.

5, systemic symptoms after the onset of illness can appear general discomfort, weakness and fever and other systemic symptoms. Fever is usually 38-39 ℃, a few up to 41-42 ℃, but the fever mostly in 4-7 days gradually subside, and lasts for more than 2 weeks is rare. Fever and other serious cases can lead to dehydration electrolyte disorders, shock, etc. Patients are mostly manifested as nausea and vomiting in the first; followed by diarrhea 3 to 5 times a day or even dozens of days, the stools are watery, dark yellow or greenish stench can be accompanied by abdominal cramps, fever, generalized body aches and pains.

6, abdominal signs Relatively few. Sometimes there may be abdominal fullness, see intestinal type. Periumbilical and epigastric region may have obvious pressure pain. Early bowel sounds can be hyperactive, and then can be weakened or disappeared.