COVID-19 symptoms include fever, chills, dry cough, shortness of breath, muscle aches, pneumonia, and sore throat. In addition, some patients experience gastrointestinal symptoms such as nausea and diarrhea.
Severe cases of COVID-19 can lead to pneumonia or organ failure.
Beyond the acute infection, people with COVID-19 may have symptoms that persist for more than 4 weeks or can recur following initial recovery. These post-COVID conditions, referred to as long-haul COVID,2 may include gastrointestinal distress (ie, diarrhea, constipation, nausea, pain), fatigue, brain fog, forgetfulness, cardiovascular effects, and arthritis, for an extended period after recovery. It is theorized that these symptoms may result when the immune system in COVID-19 survivors continues to overreact even though the infection has passed.