An injury or arthritis most likely causes pain outside the knee. A doctor can determine the cause based on your other symptoms and the results of imaging tests. Pain on the outer (or lateral) part ...

A sinus infection is inflammation of the sinuses, which are the air spaces around your nose, eyes, cheeks, and forehead. It is also called sinusitis. When the sinuses are inflamed, drainage is blocked ...

A toe infection can cause pain, swelling, redness, and pus discharge. Types of toe infections include a range of bacterial or fungal infections, trauma, and ingrown toenails. These infections, while ...

Figure 1. (A) Possible disease progression after infection with a respiratory virus. (B) Overview of case reports of all respiratory virus infection data reviewed in this study, including rate of ...