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.
Phobia facts. 1  The definition of a phobia is the persistent fear of a situation, activity, or thing that causes one to want to avoid it. 2  The three types of phobias are social phobia (fear of public speaking, meeting new people or other social situations), agoraphobia (fear of being outside), and specific phobias (fear of other items or situations).