Anxiety may be caused by a psychiatric illness, a physical disorder, the effects of medications, or a mixture of these causes. The doctor's first task will be to determine if the fear is a symptom of another medical disorder. 1. You always imagine the worst in every scenario 2. You overthink about the smallest of things. 3. You have trouble falling asleep even when you are sleep deprived. 4. You reject Invitations even If you want to ...