Generalized Anxiety Disorder is categorized by feelings of anxiousness in various situations and stresses in everyday life. Worry exists even when there is no obvious reason for it and people can overly stress about an otherwise resolvable issue. Getting through the day is even difficult. Panic Disorder can be hereditary and is characterized by sudden, repetitive attacks of extreme fear and/or panic, commonly referred to as a panic attack. Panic attacks are often described as feeling like a heart attack and the person ends up being very fearful of the attacks and worrying about when the next one will happen. It can cause many difficulties in life because the person will avoid situations he or she associates with the attacks. Social phobia can also be hereditary. Those with social phobia experience fear in relation to social situations and interaction. Interacting with people, even speaking, can be terrifying. Patients with social phobia often have trouble making friends and may even have some type of physical reaction when interacting with others.