Fear and anxiety can be differentiated in four domains: (1) duration of emotional experience, (2) temporal focus, (3) specificity of the threat, and (4) motivated direction. Fear is short lived, present focused, geared towards a specific threat, and facilitating escape from threat; anxiety, on the other hand, is long-acting, future focused, broadly focused towards a diffuse threat, and promoting excessive caution while approaching a potential threat and interferes with constructive coping.[17]
The cause of anxiety disorders is a combination of genetic and environmental factors.[47] Anxiety can stem itself from certain factors: genetics, medicinal side-effects, shortness of oxygen.[48] Risk factors include a history of child abuse, family history of mental disorders, and poverty. Anxiety disorders often occur with other mental disorders, particularly major depressive disorder, personality disorder, and substance use disorder.[49] To be diagnosed symptoms typically need to be present at least six months, be more than would be expected for the situation, and decrease functioning.[10][49] Other problems that may result in similar symptoms including hyperthyroidism, heart disease, caffeine, alcohol, or cannabis use, and withdrawal from certain drugs, among others.[49][7]
Panic disorder affects 2-3% of people every year in the United States and Europe, with varying rates depending on race and ethnicity. On average, Native American Indian populations experience panic disorder at higher rates than non-Latino white Americans. In contrast, African Americans, Latinos, Caribbean Blacks, and Asian Americans all experience the disorder at lower rates than non-Latino white Americans. In addition, it has been well established than females are twice as likely to be diagnosed with panic disorder than males (Asnaani, Gutner, Hinton, & Hofmann, 2009; McLean, Asnaani, Litz, & Hofmann, 2011). A number of factors (e.g., biological influences, temperament, exposure to stressors and trauma, cognitive factors, and environmental factors) have been identified as possibly influencing sex differences in rates of panic disorder (McLean & Anderson, 2009). However, no one theory has been determined so the underlying reason for sex differences in rates of panic disorder remains unknown.

I am 23 years old and this all started In 2017. My heart starts racing and I have and I start crying uncontrollably. I found myself getting away from anyone that was around me ( Going in the shower and just crying) my heart would race so fast. This has happened three times in the last two years. I hate the way this makes me feel. Should I b worried? Should I seek for help?
In people with anxiety disorders, the brain circuitry that controls the threat response goes awry. At the heart of the circuit is the amygdala, a structure that flags incoming signals as worrisome and communicates with other parts of the brain to put the body on alert for danger. Early life events, especially traumatic ones, can program the circuitry so that it is oversensitive and sends out alarms too frequently and with only minor provocations. Survival mandates a system for perceiving threats and taking quick, automatic action, but those with anxiety see threats where there are none, perhaps because emotional memories color their perceptions.
Cognitive Behavioral Therapy (CBT) is an example of one type of psychotherapy that can help people with anxiety disorders. It teaches people different ways of thinking, behaving, and reacting to anxiety-producing and fearful objects and situations. CBT can also help people learn and practice social skills, which is vital for treating social anxiety disorder.