The diagnosis of primary hyperhidrosis is mainly connected with a personal feeling that excessive sweating starts to interfere with one's personal or working life. Excessive sweating is usually diagnosed by a physician in case:
The diagnosis of secondary hyperhidrosis is typically connected with the above mentioned diseases, physical states or the use of certain drugs, especially antidepressants.
For a more detailed diagnosis of areas with excessive sweating we can use a thermoregulation test where a powder is applied on the patient's body and an increase of humidity is signalled by a change in colour. Subsequently the patient is put into a thermoregulated room and the extent and speed of sweating is monitored.