"Summer heat syndrome" is medically referred to as infantile summer heat, which generally occurs during hot summers. It is not caused by a fever due to bacterial infection in infants, but rather a rise in body temperature due to an increase in external temperature; hence, it is also called "summer hyperthermia." The body temperature usually ranges between 38°C to 40°C, with higher temperatures correlating to hotter weather. This condition can last from 1 to 3 months, subsiding naturally as the weather gradually cools down.