Gravimetry

After a 15-minute rest in a sitting position, the participants were invited into the air-conditioned measuring room with standardized temperature (24–25ºC) and humidity (15–17%). A standard small cotton gauze pad was weighed on a precision scale. Then the pad was given to the participant, who was asked to carefully wipe their palms for 1 min. The pad was weighed again and the difference was calculated. Subsequently, the procedure was repeated for the face, armpits and abdomino-lumbar area with separate cotton gauzes. Except for the palms, all measurements were taken in medical gloves to avoid summing up sweat from different areas. Thresholds for diagnosis of HH were quantified respectively as: 49 mg/min/m² for the facial area, 46 mg/min/m² for the palms, 136 mg/min/m² for the armpits, and 50 mg/min/m² for the abdomino-lumbar area [6].