Sinus infection: Sinus infections are isolated to the head and neck they never involve the lower extremities unless there is a massive infection that involves the veins that drain the head and neck. In these cases the whole head and neck are swollen as the infection extends to the brachio-cephalic veins that drain into the superior vena cava near the heart. There would be other signs and symptoms.
Answered 3/22/2020
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NO: No sinus infection will not cause swelling in one or both arms.
Answered 12/27/2013
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