Tag #symptoms

COVID-19

Introduction COVID-19 is an infectious disease caused by the novel coronavirus SARS-CoV-2. First identified in late 2019, it quickly spread worldwide and was declared a pandemic by the World Health Organization in March 2020. COVID-19 primarily affects the respiratory system…

Chest pain

Introduction Chest pain is a common symptom that can have many different causes, ranging from mild and harmless to serious and life-threatening. It may feel sharp, dull, burning, or tight, and can be associated with other symptoms such as shortness…