Vaccination is generally not recommended when there is a heat rash. Heat rash is usually a contraindication to vaccination, so vaccination is generally not recommended when there is a heat rash, otherwise the heat rash will be significantly aggravated, and will lead to fever, fever, and in severe cases, it will cause other adverse reactions, such as nausea, vomiting, diarrhea, abdominal pain and so on. In addition, when there is a heat rash, people’s immunity will be weaker, at this time the vaccine is easy to infection or cold, is not conducive to the health of the body. Vaccination at the time of heat rash may also affect the production of antibodies by the vaccine and may not achieve the immunization effect, so it is generally not recommended to vaccinate at the time of heat rash. In addition to this, vaccination is also not recommended when the body has a cold, fever or heat. If you are currently diagnosed with heat rash, it is recommended that you receive treatment first, and then consider vaccination when your body has fully recovered and has no other adverse reactions, and you should consult your healthcare professional for details.