PROBLEM TO BE SOLVED: To provide a pharmaceutical aerosol which is suitable for delivering an active compound to the mucosa of the nose, the ostiomeatal complex or the paranasal sinuses.SOLUTION: The pressure of an aerosol is not constant, but pulsates at a frequency from about 10 to 90 Hz. The aerosol is further characterized in that it exhibits a low effective flow rate of less than about 5 liters per minute. The pharmaceutical aerosol is particularly suitable for the prevention, management and treatment of a disease, symptom, or condition affecting the nose or the paranasal sinuses, such as acute and chronic sinusitis.【課題】活性化合物を鼻の粘膜、洞口鼻道系または副鼻腔に送り込むのに適したエーロゾル薬剤を提供する。【解決手段】エーロゾルの圧力は一定ではなく、むしろ約10乃至90Hzの振動数で変動する。エーロゾル剤の特徴は更に、毎分約5リットル未満という少ない有効流量を示すことにある。エーロゾル剤は特に、鼻または副鼻腔を冒す病気、症状または状態、例えば急性及び慢性副鼻腔炎の予防、管理および治療に適している。【選択図】なし