SAD stands for social anxiety disorder.
This disorder is a serious condition that can make a person unable to enjoy his or her life and forces them to feel continuously uncomfortable when they are in a group situation or out in public places.
Now it is common for you to feel nervous when you are in public and when you are meeting someone new.
However for someone with social anxiety there is such an innate fear that they are unable to react normally in situations that are considered to be social.
This includes things as simple as going to the grocery store or getting fuel at a gas station.
Someone who is suffering from social anxiety will find themselves feeling overwhelmingly anxious and very self conscience over their every move.
The fear is caused from the person thinking that they will be scrutinized or that they will do something embarrassing when they are in a public place or situation involving others.
These people will think that their anxieties and fears are unreasonable but will have no way to be able to control these feelings as a normal person will.
When suffering from social anxiety someone will avoid the social situations that they are afraid of.
This can interfere a lot with someone's day to day life and can lead to problems with their social life, family life and life at work.
It might even become impossible for them to carry out normal day to day activities that they once enjoyed or had success in.
These people might even find that they are unable to make friends and enjoy everyday relationships that they could really enjoy.
In the beginning social anxiety is typically less severe and might just center around a specific event or place.
This might mean that you are no longer able to go to the mall or to church and enjoy yourself as you once did.
It could also be that you can no longer do something in front of someone like you did before.
This might mean that you can no longer dance when you are out at the clubs or your might not be able to eat in front of others any longer.