What can cause one to have swollen eyes, nausea and a headache?

Possibly sinus : If these symptoms were preceded by an upper respiratory infection a bacterial sinus infection may have developed as a result of that. There may also be a pressure feeling between or behind the eyes as well feeling stuffy in the nose. The pressure and headaches may cause nausea. Over the counter medications to decrease the stuffiness in the nose may provide relief. If not see your physician.