Reading the stock tables is like swimming in alphabet soup. Not only does each company have a ticker symbol of one to five letters, but market listings are also peppered with an array of behind the dot codes that tell you something about the stock. The abbreviation .PK is one such code -- and it tells you to be extremely careful.
Facts and Tips about Phobic Disorders. 1  Phobic Disorders is common form of anxiety disorder, having unreasonable fear of certain situations, conditions, or substance. 2  Phobic Disorders is further divided into three types such as agoraphobia, social phobia (social anxiety disorder) and specific phobias.
Types of Affective Disorders. The three main types of affective disorders are: depression, bipolar disorder, and anxiety disorder. Each includes subtypes and variations in severity. Depression. Depression, or major depressive disorder, is characterized by feelings of extreme sadness and hopelessness.ffective Disorders Overview. Affective disorders are a set of psychiatric diseases, also called mood disorders. The main types of affective disorders are depression, bipolar disorder, and anxiety disorder.