Can sinus infection cause teeth chattering?

Yes, a sinus infection can potentially cause teeth chattering, although it's not a common symptom. The infection can lead to pressure and pain in the sinus areas, which might cause discomfort that could result in involuntary muscle contractions, including chattering. Additionally, if the infection leads to fever or chills, these symptoms might also contribute to teeth chattering. If experiencing this symptom, it's advisable to consult a healthcare professional for proper evaluation and treatment.