Cassandra has recently had several short but highly intense experiences in which physical anxiety suddenly overwhelms her, making her feel as if she is having a heart attack. her symptoms are most consistent with:

The correct answer is known as the "Panic Disorder".

The Panic Disorder is described as an anxiety sickness characterized by using reoccurring surprising panic attacks. Panic assaults are sudden durations of excessive fear that could consist of palpitations, sweating, shaking, shortness of breath, numbness, or a sense that something definitely terrible is going to occur.