People with post-COVID conditions can have a wide range of symptoms that can last more than four weeks or even months after infection. Sometimes the symptoms can even go away or come back again. Post-COVID conditions may not affect everyone the same way. People with post-COVID conditions may experience ongoing-health problems from different types and combinations of symptoms happening over different lengths of time. Most patients’ symptoms slowly improve with time. However, for some people, post-COVID conditions may last months, and potentially years after COVID-19 illness.