My two year-old has a moderate fever 102-103 (temporal, digital reading) and her head, neck and underarms feel very hot, but her arms legs and body are cool. She's very fussy and tired with loss of appetite. We were outside most of the day yesterday in about 85-90 degree weather, and for a few hours today. Tylenol and a cool cloth seem to help a little. What would cause fever only in head, neck and underarms?