Anxiety disorders refer to a group of serious yet treatable health problems, chronic condition characterized by an excessive and persistent sense of apprehension with physical symptoms such as sweating, palpitations , and feelings of stress.
Anxiety disorders have biological and environmental causes. Itcovers sevaral forms of fear, phobia and nervous condition, that come on suddenly and prevent pursuing normal daily routines: general anxiety disorder,social anxiety, sometimes known as 'social phobia' or 'social anxiety disorder' (SAD) ,specific phobias ,agoraphobia ,claustrophobia ,panic disorder ,separation anxiety disorder ,post-traumatic stress disorder