Perspiration is a common body’s response to regulating temperature. If it exceeds the normal there must be other causes which need to be studied. The most common example would be an overactive thyroid , menopausal symptoms, a prolonged fever or some kind of stress or psychological factor.
In Chinese medicine, sweating is caused by a deficiency of qi or yin There are different remedies used for each deficiency. For example peony for yin deficiency and astragalus for qi deficiency
In homeopathy lycopodium is used for excess perspiration as well as calcareous, mercurius ands sulfur. A constitution should be done with these patients
I have seen cypress oil and lavender used for excess sweating.