Hi it is very common issue with mist of us
Even you meet the best of orators and speakers and ask them even they would say I am nervous. Because every crowd and speech is new to them too. Fix an appointment with a counsellor and get it resolved easily by some simple and easy to follow techiques.
Hi there...I can understand your concern. It is very common to have anxiety, nervousness, sweating when speaking in public or interviews. Firstly you can try conservative measures like yoga, mediation or relaxation excercises to relax your mind and cool your body. If this doesn't help then you might have to be checked for any thyroid disorders. Even if that is normal, then consult a psychiatrist. They will be able to councel your and if needed even provide anti anxiety drugs like beta blockers.