Short answers, pulled from the story.
The 1893 painting The Scream by Edvard Munch captures the very essence of human anxiety. This artwork depicts a figure with a mouth agape in a silent scream against a blood-red sky. It serves as the visual anchor for understanding anxiety as a profound existential dread.
The Danish philosopher Søren Kierkegaard described anxiety as the state of being aware of one's own possibilities in his 1844 treatise The Concept of Anxiety. He articulated this concept as the dizziness of freedom and a terrifying realization that comes with the weight of absolute freedom. This definition distinguishes anxiety from fear which is a response to a specific present danger.
Pathological anxiety disorders affect approximately 12 percent of the population in any given year. This modern medical definition distinguishes between normal anxiety and anxiety disorders that began to crystallize in the 20th century. The condition involves a complex inner turmoil that can manifest as dread, terror, or even agony.
The brain's amygdala shows increased blood flow when people are confronted with unpleasant stimuli such as foul odors or tastes. This small almond-shaped structure plays a central role in the process by triggering the release of stress hormones that impact bowel function. The response is deeply physiological and involves the regulation of mood and stress responses.
Genetic differences account for about 43 percent of the variance in panic disorder. Twin studies have revealed that genetic influence on individual differences in anxiety ranges from 25 to 40 percent. Longitudinal studies show that the moderate stability of anxiety from childhood through adulthood is mainly influenced by the stability in genetic influence.
Cognitive behavioral therapy emerges as a first-line treatment that has proven effective in reducing symptoms and improving quality of life. The treatment appears to be equally effective when carried out via the internet making it accessible to a wider population. It is often combined with psychopharmacological treatment including selective serotonin reuptake inhibitors and serotonin-norepinephrine reuptake inhibitors.