I think social anxiety is not generally concerned with "what do other people think I look like" and that kind of thing. Maybe you are misunderstanding what social anxiety can mean.
I didn't only mention worries about what I look like, I included much more than that (it is worry about what others think of you, about having to perform etc.).
And I do know what social anxiety is (a German girl on an AS forum has both and I looked into this extensively at the time) and no I have none of those things. (I do have issues with experiencing emotion while being watched - like I can't feel enjoyment or surprise when opening gifts when being watched - but this is only with the very few people I am close to, because unless I am very close to someone I don't register them much in an emotional kind of sense)
Yes there are ways in which people can be "anxious about social encounters" for many reasons (including social ineptitude, multitasking, sensory issues etc.) but that is not the same as the diagnosis of "social anxiety". (See definitions below)
Social anxiety is the fear of social situations and the interaction with other people that can automatically bring on feelings of self-consciousness, judgment, evaluation, and inferiority.
Put another way, social anxiety is the fear and anxiety of being judged and evaluated negatively by other people, leading to feelings of inadequacy, embarrassment, humiliation, and depression.
If a person usually becomes anxious in social situations, but seems fine when they are alone, then "social anxiety" may be the problem.
...
Specific and Generalized Social Anxieties
A specific social anxiety would be the fear of speaking in front of groups (only), whereas people with generalized social anxiety are anxious, nervous, and uncomfortable in almost all social situations.
It is much more common for people with social anxiety to have a generalized type of this disorder. When anticipatory anxiety, worry, indecision, depression, embarrassment, feelings of inferiority, and self-blame are involved across most life situations, a generalized form of social anxiety is at work.
Symptoms of Social Anxiety Disorder
People with social anxiety disorder usually experience significant emotional distress in the following situations:
Being introduced to other people
Being teased or criticized
Being the center of attention
Being watched while doing something
Meeting people in authority ("important people")
Most social encounters, especially with strangers
Going around the room (or table) in a circle and having to say something
Interpersonal relationships, whether friendships or romantic
This list is certainly not a complete list of symptoms -- other feelings have been associated with social anxiety as well.
The physiological manifestations that accompany social anxiety may include intense fear, racing heart, turning red or blushing, excessive sweating, dry throat and mouth, trembling, swallowing with difficulty, and muscle twitches, particularly about the face and neck.
Constant, intense anxiety that does not go away is the most common feature.
People with social anxiety disorder know that their anxiety is irrational and does not make "head" (i.e., cognitive) sense. Nevertheless, "knowing" something is not the same thing as "believing" and "feeling" something.
Thus, for people with social anxiety, thoughts and feelings of anxiety persist and show no signs of going away -- despite the fact that socially-anxious people "face their fears" every day of their lives.
Only the appropriate therapy works to alleviate social anxiety disorder, the largest anxiety disorder, and the one that few people know anything about.
And:
The Diagnostic and Statistical Manual of the American Psychiatric Association currently defines social anxiety disorder in the following way.
Please note that while this definition of social anxiety is the most definitive and clear produced to date, there are several potential problems with this definition that will hopefully be addressed by the task forces, editors, and research coordinators of the association as time progresses.
The Current DSM-IV (Abridged) Definition:
A. A persistent fear of one or more social or performance situations in which the person is exposed to unfamiliar people or to possible scrutiny by others.
The individual fears that he or she will act in a way (or show anxiety symptoms) that will be embarrassing and humiliating.
B. Exposure to the feared situation almost invariably provokes anxiety, which may take the form of a situationally bound or situationally pre-disposed Panic Attack.
C. The person recognizes that this fear is unreasonable or excessive.
D. The feared situations are avoided or else are endured with intense anxiety and distress.
E. The avoidance, anxious anticipation, or distress in the feared social or performance situation(s) interferes significantly with the person's normal routine, occupational (academic) functioning, or social activities or relationships, or there is marked distress about having the phobia.
F. In individuals under age 18 years, the duration is at least 6 months.
G. The fear or avoidance is not due to direct physiological effects of a substance (e.g., drugs, medications) or a general medical condition not better accounted for by another mental disorder...[/b]
One BIG difference is that someone with AS will still have difficulty interacting with people even when the people are familiar (or the situation is familiar), whereas for someone with social anxiety, it is mostly strangers that tend to be a problem (because of the fear of judgement and scrutiny).