Depression is: feelings of sadness, hopelessness, feelings of being worthless, you can't sleep or you sleep too much, you can't control negative thoughts and have moments where life just doesn't seem worth living.
Anxiety Neurosis - is a stress related disorder characterized by diffuse anxiety and oftem somatic manifestations of fear.Anxiety Neurosis is also called panic attacks.
Panic Attacks - come on very sudden and cause intense fear, unease, and anxiety. The effects of a panic attack vary from person to person but they can cause the person having the episode to fear they are having a heart attack or a nervous breakdown.