Why does my child have a stomachache and fever?

Children usually feel very uncomfortable when they have a fever. They also feel pain in their stomach, which makes them feel very painful. Therefore, parents should relieve their pain as soon as possible to avoid the symptoms of the disease becoming more numerous and more serious. In addition, it is best to use drugs with less side effects for treatment.

3. Hemorrhagic fever with renal syndrome (HFRS) Main basis:

① Epidemiological data have been reported in all provinces and cities except Xinjiang, Tibet, Qinghai and Taiwan Province and Autonomous Region. The high frequency of emission has obvious seasonality. In most areas (wild rat type), the pandemic peaks from October to December, in some areas the minor epidemics of brown rat type occur from May to July, and the peak incidence is from March to May. Have a history of direct or indirect contact with rodents and their excrement;

②Clinical characteristics: fever, bleeding, renal damage, three main symptoms and five stages (fever stage, hypotension shock stage, oliguria stage, polyuria stage, recovery stage, X

③ Increased white blood cell count may cause leukemoid reaction, with abnormal lymphocytes (≥7%) appearing 5-2 days after the onset of the disease, thrombocytopenia and proteinuria with a sharp increase in a short period of time. If there is a membrane, the diagnosis can be confirmed;

④HFRS antibody IgM1:20 is positive and is used for early diagnosis. It appears 1-2 days after the onset of the disease, and the positive rate reaches 89% to 98% at 4-5 days. The diagnosis can also be confirmed if the HFRS antibody IgG in the double serum increases by more than 4 times during the recovery period compared with the early period.

4. Infectious mononucleosis is caused by the Epstein-Barr virus and can be sporadic throughout the year. It occurs in adolescents and is characterized by fever, pharyngitis, swollen lymph nodes behind the neck, and hepatosplenomegaly. Normal or slightly low white blood cell count, increased monocytes accompanied by atypical lymphocytes (>10%), positive heterophil agglutination test 1:64, positive anti-EBV IgM, can confirm the diagnosis

5. Epidemic encephalitis B has strict seasonality, with the vast majority of cases occurring in July, August and September. The disease mainly affects children under 10 years old. The incidence rate among adults and the elderly has increased in recent years, which may be related to the widespread vaccination of children. The characteristics are acute onset, high fever, impaired consciousness, convulsions, meningeal irritation signs, and abnormal cerebrospinal fluid. Combined with the epidemic season, the diagnosis of patients with atypical symptoms is usually based on cerebrospinal fluid examination, Japanese encephalitis-specific antibody test, and Japanese encephalitis virus antigen test.

6. Acute viral hepatitis A and E may cause chills and fever in the early stage of the yellow value, accompanied by symptoms of upper respiratory tract infection, which is similar to influenza and can be easily misdiagnosed. But it is characterized by obvious gastrointestinal symptoms and fatigue, such as lack of appetite and nausea. Vomiting, aversion to oil and abdominal distension. Pain in the liver area, yellow urine and obvious abnormal liver function can help with identification.

7. Typhus, mild epidemic typhus and endemic typhus must be differentiated from other febrile diseases. The main symptoms are acute onset, persistent high fever, severe headache, and rash 3-5 days after the onset of the disease. The diagnosis can be confirmed by the Proteus OX agglutination test (Rufei test) or a titer increase of more than 4 times in the recovery period compared with the early stage.