: Assuming you know what others are thinking about you (usually something negative).
: Triggered by a specific event (like a big test or interview) and usually goes away once the event passes. What is anxiety?
What are Anxiety Disorders? - American Psychiatric Association : Assuming you know what others are thinking
: Racing thoughts, difficulty concentrating, or fixating on "worst-case scenarios" (catastrophizing). What is anxiety?
Anxiety often stems from specific thinking patterns, such as:
It is helpful to distinguish between normal stress and clinical anxiety disorders: