I am a 23 years old, third year university student (in case this helps undesrtand my problem better).

I sweat, blush and shiver, face irregular heartbeat and difficulty in breathing, while i get a little bit excited (in cases as simple as when i think of answering a question a professor asks students). 

I dont think this is normal since it makes me so unomfortable that I just avoid even thinking about anything that causes me face this situation (and it depresses me).

wonder if anyone else out there has had the same experience, and/or knows what cuases it.

Please share your opinion/advice.

Thanks in advance! :)