Upper body region of the body
If you have a parent or sibling with it
A Fitbit could possibly help. Keeps track of steps and heart rate
Post traumatic would be a disorder that includes flashbacks.
Generalized anxiety disorder would be experiencing frequent and intense fear.
Obsessive-compulsive is an extreme fear of a specific object or situation such as, you see one book with the pages facing outward and the rest have their spine showing.