<s>[INST] i have sever sneezing when goes to a room which was closed for long time and also when exposed to dust.What may  be the cause .what are the preventive measures that can be taken from home.and best treatment for that.also my eosinophils count is 7%.What is the normal count needed. [/INST] Hi.. These are allergic symptoms.. The best method of preventing these episodes are by avoiding the allergens.. Measures such as keeping nose and mouth closed using the mask or cloth when entering the dusty rooms, regular cleaning of the room, washing the bedsheets and pillow covers, keeping the curtains closed and so on is essential.. Severe symptoms can be controlled by use of antiallergic medications.. If these symptoms are very frequent, you can consider desensitization methods.. </s>