I am a doctors living nightmare. I have many ailments with excessive sweating being one of them.
Since the age of 15 years I have been ill which I believe had in fact stemed from a toxic/stressed liver instead of a stressful lifestyle as diagnosed by my doctor.
I have also been diagnosed with IBS or in other words a sluggish bowel.
I found that when I am severely constipated and find it hard to eliminate any waste without the use of laxatives I would go through a really bad sweating crisis.
It normally starts throughout the night. My bowels are so full by the end of the day I fell that it presses against my organs which the pressure causes me to sweat excessivley during my sleep. It is so uncomfortable I often wake up in the night shivering because the bed sheets are soaking wet.
This only happens when I am severely constipated. I also sweat excessivley under my armpits which smells horrific (not of BO). Possibly the toxins breaking through my skin.
Once I have a good "blow out" or empty my bowels the sweating disappears.
I had decided to cleanse my liver/gall bladder and a previous detox has revelled that I am riddled with toxins and my liver played a big part in my ill health.
Im not sure if this was of any hope for you but your liver may be the culprit.