A stuffy nose, sinus pressure, sneezing, and a runny nose can make it difficult to tell what is actually causing your symptoms. Is it seasonal allergies, or could you have a sinus infection? The two conditions can look very similar, especially during allergy season. However, there are some important differences that can provide clues. Mucus color, facial pain, fever, itchy eyes, and how long your symptoms last can all help you determine whether allergies or ...