Hello Dear,
Lack of sweat could be just a normal variation in your daughter’s body cooling mechanism or there could be the following possibilities-
skin diseases or conditions that can block or clog sweat ducts ,injury to the skin and sweat glands, including burns ,dehydration and heat stroke ,malfunctions
of the hypothalamus (the area
of the brain that regulates temperature), or other neurological conditions,thyroid gland problems ,use of certain medications .