Talk to General Physician on Excessive Sweating On Face (Forehead), Turing Face Color To Red

I am facing a very serious problem from couples of years that is excessive sweating on face (forehead), hands and changing face color to red.

When this happen: 1- While in crowd or at public place. Like in marriage ceremony continuously sweating and lack of freshness on face 2- While feeling being a guilty 3- In case of insult 4- doing a work in front of other peoples 5- Presenting himself or introducing with others

I am totally bound. There is no charm in my life. I always try to avoid situations like remain unanimous.

Please please please.......... Guide me whats is the problem. Is there any treatment for this. I am too much depressed.