The child has a fever and diarrhea after the vaccine, which conditions should go to the hospital

time:2023-02-07 author:Fever
The child has a fever and diarrhea after the vaccine, which conditions should go to the hospital

When it comes to vaccines, many parents have the following question: After the child is vaccinated, he has a fever and a rash. Don't vaccines prevent disease? Why does my child get sick after being vaccinated? This condition is mostly caused by adverse reactions after vaccination. So, what are the side effects of the vaccine after the child is vaccinated? How to deal with it?


After vaccination, some children may experience fever, headache, fatigue, irritability, loss of appetite, etc. Among them, low-grade fever is the most common and usually lasts for 1 ~2 days. When the child has a low fever, the body temperature does not exceed 38.5 ℃, and there are no other symptoms, parents should not worry too much, strengthen observation, pay attention to keeping the room ventilated, and replenish water to the baby in time (the baby within 6 months of breastfeeding a small amount of times), You can also physically cool down by wiping with a towel, fanning, etc., while ensuring the child's rest time. If the baby continues to have a fever, the temperature exceeds 38.5 ℃, and is accompanied by other symptoms, you need to take the baby to the hospital for diagnosis and treatment as soon as possible!

Local redness and swelling

If the child has local redness, swelling, pain, induration, etc. at the vaccination site, it usually subsides gradually after 24 to 48 hours. Depending on the extent of redness and induration, the following treatments can be done: if the diameter is less than 2cm, no treatment is generally required; if the diameter is 2~3cm, cold compress with a clean towel can be used. Second-rate. If the diameter is ≥3cm, seek medical attention as soon as possible, and inform the doctor of the type of vaccine and the time of vaccination for the child as soon as possible. Special attention: local redness, swelling and induration caused by BCG vaccination should not be heated. Because 2 to 4 weeks after BCG vaccination, the injection site will start to be red, swollen, purulent, ulcerated, scabbed, and finally left with small scars. The whole process will last for 2 to 4 months. When nursing, just wipe it with water and then dry it. Do not use alcohol, iodine, disinfectant, etc. for local disinfection, so as not to affect the vaccine effect and delay the wound healing time.


Some children experience abdominal discomfort and mild diarrhea after being vaccinated. In this case, parents should not worry, pay attention to timely replenishment of water to the baby (babies within 6 months of breastfeeding in small amounts and multiple times), change diapers in time, and ensure adequate rest, usually two or three days to recover. If your child has severe diarrhea, you need to go to the hospital as soon as possible.

Allergic rash, angioedema, febrile convulsion

In addition to low-grade fever, local redness, mild diarrhea and other general reactions, some children may experience syncope, allergic reactions Skin rash, anaphylactic shock, BCG lymphadenitis, local purulence and other abnormal reactions. However, the probability of such adverse reactions is extremely low, and once it occurs, it is necessary to go to a regular hospital for diagnosis and treatment as soon as possible. Generally speaking, if the diagnosis and treatment are timely, it will not cause too much damage to the child's body.

Coupling infection

If the child happens to be in the incubation period of a certain disease, or the child happens to have a contraindication for vaccination stipulated in the vaccine instructions, after vaccination, the child's original The acute relapse of the disease or the emergence of a new condition, such adverse reactions are coupled infections. To prevent coupled infection, parents need to do two things. One is to grasp the physical condition of their children, such as whether they are allergic, whether they are in a state of fever, diarrhea, etc., so as to avoid letting their children get vaccinated when they are sick. The second is to strictly grasp the contraindications of vaccination. For example, children with immunodeficiency diseases cannot receive live attenuated vaccines such as polio vaccine. In general, although some children have adverse reactions after vaccination, most of them are general reactions that can be cured by themselves, and rarely have abnormal reactions or co-infections. As long as parents fully understand their children's health and how to deal with adverse reactions, they can be vaccinated with confidence.
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