How long can debilitating fatigue and "brain fog" associated with Long COVID linger?
Three months or longer
The experience following the acute phase of COVID-19 infection is not always immediate return to baseline health; a significant subset of individuals develops what is termed Long COVID or post-COVID conditions. This phase is characterized by persistent symptoms that linger well beyond the time required to clear the active virus. Key indicators of these long-term effects include debilitating fatigue, persistent difficulty concentrating, often described as 'brain fog,' and ongoing issues with shortness of breath. These specific symptoms have been documented to continue affecting patients for extended durations, often persisting for periods of three months or even exceeding that timeframe, signaling a need for specialized long-term management.

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What can I do to help speed up the recovery process - YouTube