A: The only way to know for sure if you have heat-induced sweating is by doing a sweat test. It has to be done under supervision, and the patient should not do any strenuous exercise prior to testing. The sweat test will measure your body’s ability to produce perspiration during maximal effort (and recovery). If you cannot perform this task at all or it takes longer than 2 minutes then that indicates an absence of heat-related hyperhidrosis, otherwise known as primary axillary hyperhidrosis. If you can perform the test without stopping or slowing down after 5 minutes then that means that your axillary glands are functioning normally and therefore there is no evidence of acromegaly in these patients.