Performance anxiety

Stage fright or performance anxiety is the anxiety, fear, or persistent phobia which may be aroused in an individual by the requirement to perform in front of an audience, whether actually or potentially (for example, when performing before a camera). In the context of public speaking, this may precede or accompany participation in any activity involving public self-presentation. In some cases stage fright may be a part of a larger pattern of social phobia (social anxiety disorder), but many people experience stage fright without any wider problems. Quite often, stage fright arises in a mere anticipation of a performance, often a long time ahead. It has numerous manifestations: stuttering, tachycardia, tremor in the hands and legs, sweaty hands, facial nerve tics, dry mouth, and dizziness.

Stage fright may be observed in people of all experiences and backgrounds, from those who are completely new to being in front of an audience to those who have done so for years. It is commonly known among everyday people and may, for example, affect their confidence in job interviews. It also affects actors, comedians, musicians, and politicians. Many people with no other problems in communication can experience stage fright, but some people with chronic stage fright also have social anxiety or social phobia which are chronic feelings of high anxiety in any social situation. Stage fright can also be seen in school situations, like stand up projects and class speeches.

When someone starts to feel the sensation of being scared or nervous they start to experience anxiety. According to a Harvard Mental Health Letter, "Anxiety usually has physical symptoms that may include a racing heart, a dry mouth, a shaky voice, blushing, trembling, sweating, lightheadedness, and nausea". It triggers the body to activate its sympathetic nervous system. This process takes place when the body releases adrenaline into the blood stream causing a chain of reactions to occur. This bodily response is known as the "fight or flight" syndrome, a naturally occurring process in the body done to protect itself from harm. "The neck muscles contract, bringing the head down and shoulders up, while the back muscles draw the spine into a curve. This, in turn, pushes the pelvis forward and pulls the genitals up, slumping the body into a classic fetal position".

...
Wikipedia