Post-Viral Syndrome refers to a collection of symptoms that persist after the initial infection of a virus, such as the common cold or COVID-19. Individuals may experience fatigue, muscle pain, and cognitive difficulties, which can last for weeks or even months after recovery from the acute phase of the illness. The exact cause of Post-Viral Syndrome is not fully understood, but it is believed to involve immune system responses and inflammation. Treatment typically focuses on managing symptoms and may include rest, hydration, and gradual return to normal activities, as well as support from healthcare professionals.