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 Factitious Disorders. There are four main types of factitious disorders, including: Factitious disorder with mostly psychological symptoms: As the description implies, people with this disorder mimic behavior that is typical of a mental illness, such as schizophrenia.