<s>[INST] SIR I AM SUFFERING FROM ALLERGY PROBLEM..MY NOSE BLOWS FOR 24*7..I CAN'T RESIST MY SNEEZING IN LITTLE DUST ALSO...COLD FOOD IS LIKE POISON FOR ME.....I CANT STAY AT COLD PLACE....MY HEARTBEAT STARTS BEATING REALLY FAST I AM AFRAID IS THAT A SERIOUS PROBLEM..?? [/INST] Hello.Thank you for asking at HCM.From your history, I think you are having a severe allergic rhinitis.I would suggest you to take intranasal corticosteroids and montelukast for 2 weeks. Once inflammation of your nasal mucous membranes is controlled, they will become less reactive to external triggers such as cold, dust, etc.In addition, I would also suggest daily nasal irrigation with saline spray 3 to 4 times a day. Please avoid exposure to dust, cold dry air, smoke, air-pollutants as much as possible. Please avoid cold food & cold drinks also.I assume you don't have breathing difficulty.There are many possible causes for feeling of fast heartbeats, including but not limited to, some drugs (including some antihistamines for rhinitis), anxiety, stress, etc. I would suggest you to consult a physician if the cause is not apparent.Hope this helps you.Wish you best of the health.Regards. </s>