What symptom is NOT associated with COVID-19 as per the findings?

Headaches are not typically highlighted as a primary symptom of COVID-19, even though they can occur in some cases. COVID-19 is primarily associated with respiratory symptoms and systemic responses, which often include fever, cough, shortness of breath, and muscle fatigue. These symptoms are more commonly observed in individuals who test positive for the virus. The symptoms that are most frequently reported align closely with those related to respiratory illnesses and systemic inflammation. While some people may experience headaches, they are less emphasized in currently accepted criteria for COVID-19 symptoms compared to the other options listed.

It's essential to recognize that the understanding of COVID-19 symptoms is based on evolving research, but in general, headaches are not as consistently reported as the other symptoms associated with the illness.