Psychological Disorders List - Symptoms and Diagnosis. This psychological disorders list and directory has been abbreviated from the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV). This manual is the most widely used diagnostic criteria for the classification of psychological disorders. Adjustment Disorders.
pest â(plural pests). ( 1 originally) A plague, pestilence, epidemic. 2  An annoying, harmful, often destructive creature. 3  An annoying person.( 4 Britain, slang) Someone with poor social discipline who continually bothers uninterested women.est â(plural pests). ( 1 originally) A plague, pestilence, epidemic. 2  An annoying, harmful, often destructive creature. 3  An annoying person.
Although the English plural is commonly formed with the suffix-s or-es, the plural of some nouns (such as sheep) is identical in form to the singular (see zero plural), while some other nouns (such as dust) have no plural form.See Examples and Observations below.Also see:lthough the English plural is commonly formed with the suffix-s or-es, the plural of some nouns (such as sheep) is identical in form to the singular (see zero plural), while some other nouns (such as dust) have no plural form. See Examples and Observations below. Also see: