hi welcome to hcm.see increase sweating is called hyperhydrosis.it causes may be neurogenic
heat and emotion
there are several treatment for it like
1)Antiperspirant- aluminium chloride which block the sweat duct.apply it before bed time
2)lontophoresis - a device which passes directly through skin using tap water
5)Naturally backing soda apply on affected area wait for 20min then washed which absorb excessive moisture.