Answer:
Panic attacks
Explanation:
Anxiety is the way the human body reacts to stress and there are five major types of anxiety disorders; Generalized Anxiety Disorder, Obsessive-Compulsive Disorder, Panic Disorder , Post-Traumatic Stress disorder and Social Phobia (or social anxiety disorder). Marlene suffers from Panic Disorder which leads to panic attacks and her counting is a coping mechanism which helps her to calm down as it helps her to focus greatly.
