Pick an object that you can see somewhere in front of you and note everything you notice about that object—from its color and size to any patterns it may have, where you might have seen others like it, or what something completely opposite to the object would look like. You can do this in your head or speak your observational aloud to yourself or a friend.
Anxiety can be experienced with long, drawn out daily symptoms that reduce quality of life, known as chronic (or generalized) anxiety, or it can be experienced in short spurts with sporadic, stressful panic attacks, known as acute anxiety.[18] Symptoms of anxiety can range in number, intensity, and frequency, depending on the person. While almost everyone has experienced anxiety at some point in their lives, most do not develop long-term problems with anxiety.
Moreover, this hypocapnia and release of adrenaline during a panic attack cause vasoconstriction resulting in slightly less blood flow to the head which causes dizziness and lightheadedness.[28][29] A panic attack can cause blood sugar to be drawn away from the brain and toward the major muscles. Neuroimaging suggests heightened activity in the amygdala, thalamus, hypothalamus, and brainstem regions including the periaqueductal gray, parabrachial nucleus, and Locus coeruleus.[30] In particular, the amygdala has been suggested to have a critical role.[31] The combination of high arousal in the amygdala and brainstem along with decreased blood flow and blood sugar in the brain can lead to dramatically decreased activity in the prefrontal cortex region of the brain.[32] There is evidence that having an anxiety disorder increases the risk of cardiovascular disease (CVD).[33] Those affected also have a reduction in heart rate variability.[33]

But over time, you may find yourself experiencing more panic attacks, in a variety of circumstances. Most of these will not be entirely unexpected. Most subsequent attacks occur in response to various cues such as entering a crowded area; a traffic jam; or simply worrying about having a panic attack. But there may still be some surprises: for instance, you might have a nocturnal panic attack, which wakes you out of a sound sleep. Or you might find yourself experiencing odd feelings of depersonalization as you kill some time with friends or colleagues.

Anxiety is a normal reaction to danger, the body’s automatic fight-or-flight response that is triggered when you feel threatened, under pressure, or are facing a stressful situation. In moderation, anxiety isn’t necessarily a bad thing. It can help you to stay alert and focused, spur you to action, and motivate you to solve problems. But when anxiety is constant or overwhelming—when it interferes with your relationships and daily activities—you’ve likely crossed the line from normal anxiety into the territory of an anxiety disorder.
Not everyone understands is that someone with an anxiety disorder cannot "just let things go". This makes the struggle with an anxiety disorder even harder, and may prevent one from looking for help. However, it is very important to talk about these anxieties with someone and preferably find a health care professional as soon as you experience these symptoms. Anxiety should be considered as severe as a physical disease; however, most people in society do not appreciate the severity of this disorder. Some people may consider anxiety a fault or a weakness; however, it may help if people realize that many research studies have demonstrated biological explanations for (some of) the symptoms observed in anxiety disorders. Brain scans have demonstrated brain abnormalities in certain anxiety disorders, and also altered brain functioning has been demonstrated for individuals with anxiety disorders. Furthermore, there is some evidence that anxiety disorders might be linked to chemical imbalances in the brain.
Panic attacks, on the other hand, are short bursts of intense fear often marked by increased heart rate, brief chest pain or shortness of breath. Typically lasting fewer than 30 minutes, they could occur once or repeatedly — sometimes without reason. These episodes can send patients to the emergency room, as they are sometimes mistaken for a heart attack.
Another important prevention strategy for anxiety is to incorporate exercise into your daily activities. Exercise has been shown to decrease stress hormones that influence anxiety and also improve overall mood. Exercise can also help you disengage from worry and stress and focus on the current task of exercising. Exercises such as light jogging or brisk walking that can be incorporated into your daily activities can help reduce the impact of anxiety when it occurs.
If the person has a family history of seizures or symptoms that are not typical for panic attack, a neurologist may be asked to evaluate the person. There is some overlap between the symptoms of panic attack and what is known as "partial seizures." Distinguishing between the two is important because the treatment for each is quite different. A neurologist, if consulted, will order an EEG (electroencephalogram) to check for seizure activity in the brain. This is a painless test but does require some time to complete (typically overnight).

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.