The flu can also cause a general feeling of fatigue or malaise, Ray says, as well as gastrointestinal issues like diarrhea and nausea, especially among children. As with COVID-19, some people also ...
When you first start coughing, feel fatigued, and notice a low-grade fever, it can be hard to determine whether you have the common cold or bronchitis. A cold can potentially turn into bronchitis.