David Pearl
59 minutes ago (November 3, 2026)
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a serious, long-term, multi-system illness that affects the nervous, immune, and energy metabolism systems. [1, 2, 3]
Core Symptoms
Post-Exertional Malaise (PEM): The hallmark feature—a severe, delayed worsening of symptoms and physical or mental exhaustion (a "crash") triggered by minor exertion. It can last... Read more.
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