Physical symptoms of social anxiety disorder may include blushing, profuse sweating, trembling, nausea or other abdominal distress, rapid heartbeat, shortness of breath, dizziness or lightheadedness, headaches, and feelings of detachment and loss of self-control.
Everyone can relate to feeling anxious before giving a presentation or asking someone out on a date.
But those with social anxiety disorder experience an intense fear of being scrutinized and negatively evaluated by others in social or performance situations. Some literally feel sick from fear in seemingly nonthreatening situations.
The disorder is often selective. Some people may have an intense fear of talking to a salesperson or giving a speech, but they may be comfortable in other similar settings.
Other people may become anxious during routine activities such as starting a conversation with a stranger or a person in authority, participating in meetings or classes, or dating and attending parties.