Background
Excessive sweating reflects instability of the part of the brain called the autonomic nervous system. It affects about 2% of the population.
If you‘ve had it since childhood, it is probably genetic. If not, consider hormonal imbalances, stress, anxiety and infections.
Common Causes
Estrogen and progesterone deficiency
Estrogen and progesterone deficiency with menopause and peri-menopause. This can begin as much as 12 years before periods stop and your blood tests for menopause become abnormal. The tipoff is that the sweats/flashes are worse around and in the week before your period and/or having irregular periods.
Testosterone deficiency
(In men) Consider this if you have fatigue, low libido, difficulty with erections, high cholesterol, or depression.
Infections
Infections of many types. Sinusitis or spastic colon suggests yeast overgrowth in both men and women.
Drops in blood sugar
Caused by a low adrenal.
Acid reflux
Acid reflux being inhaled (especially at night while sleeping). Taking 1/2 tsp of baking soda in 4 oz of water at bedtime, and using a sleep wedge can help (see Acid Reflux).
CFS/FMS
Chronic fatigue syndrome and fibromyalgia are associated with unusual sweats (from what is called "dysautonomia").
Overactive thyroid
If racing heart, weight loss and palpitations.
Treatment
Treat Underlying Causes
Treat any underlying causes discussed under Background. Begin with anxiety if sweating is worse during stress.
Recommended Supplements
Black cohosh
The herb black cohosh is very helpful for sweats/hot flashes in general (use the Remifemin form).
Soy bean pods
For menopause symptoms, soy bean pods (called "edamame" — available in the freezer section in most grocery stores) 1 handful a day can be helpful, as these naturally raise estrogen levels. Alternatively, use bioidentical estrogen from a holistic physician.
Medications
If sweating in just a small area (e.g., palms or soles), rub a regular antiperspirant onto those areas. If it persists and is annoying, see a dermatologist. They have many options including:
Aluminum salts
Botox injections
More Information Online
Treating Excessive Sweating, Night Sweats, Hot Flashes
The Safety and Effectiveness of Bioidentical Hormones: Natural (Bio-identical) vs. Synthetic HRT
Can Testosterone Be Good for You?