From the psychiatrist's Manual of Diagnostic & Statistical Manual of Mental Disorders:
Link here: https://www.ncbi.nlm.nih.gov/books/NBK519704/table/ch3.t15/#:~:text=DSM-IV-,DSM-5,as work or school performance).
DSM-IV
DSM-5
Disorder Class: Anxiety Disorders
SAME
A. Excessive anxiety and...