Typhoid fever is an acute intestinal infectious disease caused by Salmonella typhi, characterized by persistent fever, central nervous system food poisoning symptoms, gastrointestinal symptoms, and rash. Although patients may develop long-lasting immunity after the disease, the complications of typhoid fever can still have a significant impact on health. Intestinal bleeding. It is a common severe complication, commonly occurring in the third to fourth weeks of the history of present illness. It is caused by reasons such as walking around freely, overeating, and straining during defecation. The bleeding can range from occult blood in stool to a lot of purulent stool.

Intestinal perforation. It is the most severe complication, commonly occurring in the third to fourth weeks of the history of present illness. It often occurs at the distal ileum, but can also be common in the sigmoid colon or other intestinal segments. The cause of the disease is basically the same as intestinal bleeding, and in some cases, both may occur separately. The main manifestations include sudden severe pain in the lower right abdomen, accompanied by nausea, vomiting, sweating, thin and rapid pulse, shortness of breath, decreased body temperature and blood pressure. After 1-2 hours, the pain and other symptoms may temporarily subside, but the body temperature will rise rapidly and signs of peritonitis will appear shortly thereafter.

Toxic side effects

. It is more common in the first 1-2 weeks of the history of present illness. The specific manifestations include liver enlargement, which may be accompanied by tenderness upon physical examination. With the improvement of the condition, liver enlargement and liver function tests can recover within 2-3 weeks.

Toxic side effect myocarditis. It is more common in the second to third weeks of the history of present illness, accompanied by severe hemolytic anemia. Clinical symptoms include increased heart rate, irregular heartbeat, slightly low blood pressure, and specific changes in electrocardiogram.

Hemolytic uremic syndrome. It is generally common in the first 1-3 weeks of the history of present illness. The specific manifestations include hemolytic anemia and renal failure, with low platelet count and elevated free fatty acid solutes.

Others. Common conditions include bronchitis, bronchopneumonia, acute cholecystitis, thrombophlebitis, toxic encephalopathy, and others.