A white male exhibiting miliaria rubra underwent an 8-day laboratory evaluation. In spite of daily periods of exercise-heat exposure (40 C, 48% RH) and profuse sweating, miliaria rubra was no longer visible by day 3. Sweat gland function, thermoregulation and physiological adaptations during heat acclimation were normal. This is the first report to verify that humans can accomplish heat acclimation while miliaria rubra is healing. Climatic and hygenic factors which ...