Anxiety disorders can manifest in various forms and can significantly impact an individual's daily life. Consider the following case study:
Samantha is a 30-year-old woman who has recently found that her life has become increasingly dominated by irrational fears and avoidance behaviors. She avoids public places, fearing she might experience sudden panic attacks, and often worries excessively about her health and the well-being of her loved ones. Despite having no underlying medical conditions, she frequently visits doctors to seek reassurance. Samantha describes her experiences as overwhelming, to the point where they interfere with her ability to work and socialize.
Based on the details provided, what type of anxiety disorder is Samantha most likely experiencing?