Long COVID Causes Persistent Cognitive Executive Dysfunction

On March 25, 2020, clinicians and patients report persistent brain fog as a disabling long-COVID symptom, with 20–30% reporting symptoms after three months and 65–85% among long-haulers who remain ill longer. Experts attribute the deficit chiefly to disrupted executive function—attention, working memory, and planning—affecting daily tasks and careers. The findings underscore need for clinical recognition, diagnostic adjustment, and workplace accommodations.