<s>[INST] Hi there, I live in XXXXX. Since the start of summers i have been facing sneezing problem and mild breathing(heavier than normal breath). Sneezing usually occurs when I switch on the Air-Condition or Fan or change of environment like getting into a new room. The sneezing is constant (back to back) for 5 - 10 minutes and there is no mucus . Please suggest. [/INST] Hello sir, from your symptoms I think you are suffering from allergic rhinitis. You seem to be allergic to dust and sudden change in temperature. It is very frequent in summer days since there is a lot of variation in temperature outside the room and inside the room. I would suggest you to put on the fan and air conditioner not immediately once you return from a high temperature area, rather allow your body to adjust to the room temperature before you switch on any of these. You can use a good quality mask for protection against dust, or cover your nose and mouth with thin cotton cloth. Antihistaminics once daily at a low does will definitely help to decrease your sneezing. Do visit a doctor if symptom does not subside to get your sensitivity checking done. Take care and get well soon. </s>