Be smart about caffeine, alcohol, and nicotine. If you struggle with anxiety, you may want to consider reducing your caffeine intake, or cutting it out completely. Similarly alcohol can also make anxiety worse. And while it may seem like cigarettes are calming, nicotine is actually a powerful stimulant that leads to higher, not lower, levels of anxiety. For help kicking the habit, see How to Quit Smoking.
Panic disorder is diagnosed in people who experience spontaneous seemingly out-of-the-blue panic attacks and are very preoccupied with the fear of a recurring attack. Panic attacks occur unexpectedly, sometimes even when waking up from sleep. Panic disorder usually begins in adulthood (after age 20), but children can also have panic disorder and many children experience panic-like symptoms (“fearful spells”).
Chest pain is always an alarming symptom, because most of us (appropriately) associate it with cardiac conditions, in particular angina or a myocardial infarction (heart attack). However, chest pain can also be caused by a number of conditions that have nothing to do with the heart. And one of the more common non-cardiac problems that frequently produces chest pain is an anxiety attack.
Social Anxiety Disorder;Fear of social situations in which the person is exposed to unfamiliar people or to possible scrutiny by others. The individual fears that he or she will act in a way (or show anxiety symptoms) that will be embarrassing and humiliating, often times leading to avoidance of social situations and severe distress when participation in social situations can't be avoided. 
People with generalized anxiety disorder (GAD) display excessive anxiety or worry, most days for at least 6 months, about a number of things such as personal health, work, social interactions, and everyday routine life circumstances. The fear and anxiety can cause significant problems in areas of their life, such as social interactions, school, and work.