What Is Anxiety?
Anxiety encompasses feelings of worry, nervousness, or dread. Although unpleasant, occasional bouts of anxiety are natural and sometimes even productive: By signaling that something isn’t quite right, anxiety can help people both avoid danger and make important and meaningful changes.
But persistent, pervasive anxiety that disrupts one’s daily life, whether at school, work, or with friends, can be the mark of an anxiety disorder. Nearly one-third of adults in the U.S. will grapple with one at some point in their lives, according to the National Institutes of Health, and the condition strikes more women than men.
Anxiety disorders encompass a range of experiences: Generalized anxiety disorder is a chronic state of severe worry and tension, often without provocation. Panic disorder refers to sudden and repeated panic attacks—episodes of intense fear and discomfort that peak within a few minutes. Obsessive-compulsive disorder is marked by intrusive thoughts or compulsions to carry out specific behaviors, such as handwashing. Post-traumatic stress disorder may develop after experiencing or witnessing a traumatic event.
Anxiety is often accompanied by depression. Research indicates that not only do the two conditions co-occur but that they overlap in patterns of genetic vulnerability.
While anxiety has a genetic component, childhood experiences such as early trauma or parental overprotection can play a role as well. In people with anxiety disorders, the brain circuitry that controls the threat response seems to go awry: The amygdala, a structure that detects danger, can become overactive, triggering a threat when none really exists.
How to Recognize the Signs of Anxiety
Anxiety often involves worrying to an intense, excessive degree. Those worries can apply to any aspect of life, from social situations and family dynamics to physical health and professional concerns.
A person's angst or dread can be drastically out of proportion to the actual challenges he or she is facing. People may also irrationally believe that the worst-case scenario is inevitable.
Individuals suffering from anxiety may feel restless, on edge, and irritable. They may have difficulty concentrating or controlling their emotions. Physical symptoms can also include fatigue, trembling, trouble sleeping, stomachaches, headaches, and muscle tension.

How to Treat Anxiety
Anxiety disorders can often be addressed successfully with a combination of therapy and medication.
Patients may undergo psychotherapy—talk therapy tailored to their specific anxieties and the root of those fears. Cognitive behavioral therapy is one of the most effective options for anxiety disorders. The practice teaches patients to challenge their distorted thought patterns to change how they respond. Social anxiety can benefit from exposure therapy, in which patients are safely and gradually exposed to their fears so they no longer need to avoid them.
Medication can help patients control their anxiety, but they cannot cure the underlying condition. Clinicians may prescribe benzodiazepines for limited periods of time, which have the benefit of working quickly to relieve anxiety. Beta-blockers offer another short-term solution, as they can curb troubling symptoms such as a racing heartbeat or trembling hands for a specific event. Anti-depressants, such as selective serotonin reuptake inhibitors or tricyclics, are used as a longer-term treatment and can take a few weeks or months to work.
As with all medications, patients should consult a doctor to understand the side effects of a particular drug and to safely transition on and off of the medication.

Simple Strategies to Manage Anxiety
Lifestyle changes can help people who experience feelings of anxiety but who don’t meet the clinical threshold for a diagnosis. Habits such as exercising, sleeping well, and limiting the amount of caffeine and alcohol consumed can all be helpful.
Increasingly, researchers are finding that mindfulness meditation is a successful technique as well. Taking deep breaths, observing one’s thought without judgment, and acknowledging the limits of one’s control can reduce feelings of tension.
Identifying the circumstances that trigger one's anxiety, and then pushing back against anxious or irrational thoughts, can help to feel better prepared for the future.