Chronic Fatigue Syndrome Practice Test 2025 – All-in-One Guide to Master Your Exam Preparation!

Question: 1 / 400

What does PEM stand for in the context of CFS?

Post-exertional malaise

Post-exertional malaise (PEM) is a hallmark symptom of Chronic Fatigue Syndrome (CFS) that describes a pronounced worsening of symptoms following physical or mental exertion that would not have caused such an increase in symptom severity in a healthy individual. This can include fatigue, cognitive impairment, muscle pain, and a variety of other symptoms that can last for days or even weeks following the activity.

The notion of PEM is critical for understanding the nature of CFS, as it underscores that even minor exertion can lead to substantial increases in fatigue and other symptoms, which is a primary differentiator from other conditions. The concept helps guide management strategies in CFS, advocating for a balanced approach to activity that respects the individual's energy limits.

In contrast, the other options do not accurately reflect established terminology used within the CFS community. For example, "Physical exertion management" is a strategy rather than a symptom; "Persistent energy malaise" is not a recognized term; and "Post-exercise muscle soreness" refers specifically to muscle discomfort following exercise, which doesn't encapsulate the broader spectrum of symptoms experienced in CFS.

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Physical exertion management

Persistent energy malaise

Post-exercise muscle soreness

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