Antidepressants called selective serotonin reuptake inhibitors (SSRIs) and serotonin-norepinephrine reuptake inhibitors (SNRIs) are commonly used as first-line treatments for anxiety. Less-commonly used — but effective — treatments for anxiety disorders are older classes of antidepressants, such as tricyclic antidepressants and monoamine oxidase inhibitors (MAOIs).
Separation anxiety disorder: Separation anxiety is often thought of as something that only children deal with; however, adults can also be diagnosed with separation anxiety disorder. People who have separation anxiety disorder have fears about being parted from people to whom they are attached. They often worry that some sort of harm or something untoward will happen to their attachment figures while they are separated. This fear leads them to avoid being separated from their attachment figures and to avoid being alone. People with separation anxiety may have nightmares about being separated from attachment figures or experience physical symptoms when separation occurs or is anticipated.
Anxiety disorders can often be addressed successfully with a combination of therapy and medication. For therapy, patients may undergo psychotherapy or cognitive behavioral therapy, in which they learn to change how they respond to situations that induce anxiety. For medications, clinicians may, for limited periods of time, prescribe antidepressants such as selective serotonin reuptake inhibitors or tricyclics, tranquilizers such as benzodiazepines; they may also prescribe beta blockers for specific events. Different strategies can also help people who experience feelings of anxiety but the severity of which falls below the clinical threshold for diagnosis. Habits such as exercising, sleeping well, and limiting the amount of caffeine and alcohol consumed can prove helpful. Strategies such as taking deep breaths, acknowledging limits to fully controlling situations, pushing back against anxious or irrational thoughts, and observing the circumstances that tend to produce anxiety are proven to reduce anxiety by helping people feel better prepared in the future.
In the central nervous system (CNS), the major mediators of the symptoms of anxiety disorders appear to be norepinephrine, serotonin, dopamine, and gamma-aminobutyric acid (GABA). Other neurotransmitters and peptides, such as corticotropin-releasing factor, may be involved. Peripherally, the autonomic nervous system, especially the sympathetic nervous system, mediates many of the symptoms. Increased flow in the right parahippocampal region and reduced serotonin type 1A receptor binding in the anterior and posterior cingulate and raphe of patients are the diagnostic factors for prevalence of anxiety disorder.
Anxiety is a normal reaction to stress and can be beneficial in some situations. It can alert us to dangers and help us prepare and pay attention. Anxiety disorders differ from normal feelings of nervousness or anxiousness, and involve excessive fear or anxiety. Anxiety disorders are the most common of mental disorders and affect nearly 30 percent of adults at some point in their lives. . But anxiety disorders are treatable and a number of effective treatments are available. Treatment helps most people lead normal productive lives.
Anxiety disorders are characterized by a general feature of excessive fear (i.e. emotional response to perceived or real threat) and/or anxiety (i.e. worrying about a future threat) and can have negative behavioral and emotional consequences. Obsessive-compulsive and related disorders are characterized by obsessive, intrusive thoughts (e.g., constantly worrying about staying clean, or about one's body size) that trigger related, compulsive behaviors (e.g. repeated hand-washing, or excessive exercise). These behaviors are performed to alleviate the anxiety associated with the obsessive thoughts. Trauma- and stressor- related anxiety disorders are related to the experience of a trauma (e.g., unexpected death of a loved one, a car accident, or a violent incident) or stressor (e.g., divorce, beginning college, moving).
Demographic factors also impact risk for anxiety disorders. While there is not a strong consensus, research suggests that risk for anxiety disorders decreases over the lifespan with lower risk being demonstrated later in life. Women are significantly more likely to experience anxiety disorders. Another robust biological and sociodemographic risk factor for anxiety disorders is gender, as women are twice as likely as men to suffer from anxiety. Overall symptom severity has also been shown to be more severe in women compared to men, and women with anxiety disorders typically report a lower quality of life than men. This sex difference in the prevalence and severity of anxiety disorders that puts women at a disadvantage over men is not specific to anxiety disorders, but is also found in depression and other stress-related adverse health outcomes (i.e. obesity and cardiometabolic disease). Basic science and clinical studies suggest that ovarian hormones, such as estrogen and progesterone, and their fluctuations may play an important role in this sex difference in anxiety disorder prevalence and severity. While changes in estrogen and progesterone, over the month as well as over the lifetime, are linked to change in anxiety symptom severity and have been shown to impact systems implicated in the etiology of anxiety disorders (i.e. the stress axis), it still remains unclear how these hormones and their fluctuations increase women's vulnerability to anxiety.

Neural circuitry involving the amygdala (which regulates emotions like anxiety and fear, stimulating the HPA Axis and sympathetic nervous system) and hippocampus (which is implicated in emotional memory along with the amygdala) is thought to underlie anxiety.[52] People who have anxiety tend to show high activity in response to emotional stimuli in the amygdala.[53] Some writers believe that excessive anxiety can lead to an overpotentiation of the limbic system (which includes the amygdala and nucleus accumbens), giving increased future anxiety, but this does not appear to have been proven.[54][55]

Dr. Roxanne Dryden-Edwards is an adult, child, and adolescent psychiatrist. She is a former Chair of the Committee on Developmental Disabilities for the American Psychiatric Association, Assistant Professor of Psychiatry at Johns Hopkins Hospital in Baltimore, Maryland, and Medical Director of the National Center for Children and Families in Bethesda, Maryland.
Panic attacks can occur due to number of disorders including panic disorder, social anxiety disorder, post traumatic stress disorder, drug use disorder, depression, and medical problems.[2][4] They can either be triggered or occur unexpectedly.[2] Smoking, caffeine, and psychological stress increase the risk of having a panic attack.[2] Before diagnosis, conditions that produce similar symptoms should be ruled out, such as hyperthyroidism, hyperparathyroidism, heart disease, lung disease, and drug use.[2]

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. [2]
Antidepressants can take time to work, so it’s important to give the medication a chance before reaching a conclusion about its effectiveness. If you begin taking antidepressants, do not stop taking them without the help of a doctor. When you and your doctor have decided it is time to stop the medication, the doctor will help you slowly and safely decrease your dose. Stopping them abruptly can cause withdrawal symptoms.