I'm diagnosed with Generalized Anxiety and Panic Disorder with Associated Agoraphobia. It's real, and it sucks, but medication has given me back my life. You are not alone. Get psychiatric help... it's worth it. I promise.
Having a disorder is not something that someone chose to have, but is otherwise something that they are forced to deal with. In that case, please think twice before you judge someone on either how they act, look, or think.