Prior to entering a restaurant, amy starts to shake, hyperventilate, and feel light-headed. she is too terrified to enter the restaurant. she turns around immediately and catches the first taxi back home. this behavior is most consistent with

This is a prime example of an anxiety disorder. This is extremely common in people. It can include panic attacks, post traumatic stress disorder and obsessive compulsive disorder. Symptoms include higher than average stress levels that are out of proportion with the event and the lack of ability to let worries go or find inner peace. It can be treated with medications and counseling.