![]() COVID-19 also can cause autoimmune conditions where your immune system attacks healthy cells in your body by mistake, causing inflammation or tissue damage.īut there are no definite answers yet about what causes ongoing symptoms for some people. In a detailed, though not-yet-peer-reviewed study of 107 long-haul patients, about 20% to 25% showed lung damage, blood clots, heart failure or similar symptoms caused by their initial infection. What causes long COVID?ĬOVID-19 attacks practically every organ and system in the body, including the lungs, kidneys, brain, nervous system, liver, heart and others. More: Is long COVID a syndrome or a series of coronavirus complications? What we know now about lingering symptoms. Long-haul COVID-19 can last months: But here’s why experts are optimistic about recovery. Long COVID isn't a condition or syndrome as much as multiple medical issues persisting or emerging after the initial infection, which makes it tougher to diagnose and tougher to deal with. These conditions can present as different types and combinations of health problems for different lengths of time. Whatever term you use, it means patients experience a wide range of new, returning, or ongoing health problems four or more weeks after first being infected with the coronavirus that causes COVID-19. ![]() The National Institutes of Health call it post-acute sequelae of SARS-CoV-2 (PASC). Post-COVID syndrome, post-acute COVID-19, chronic COVID, long-term COVID.
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