<s>[INST] i have been suffering with allergic rhinitis foe several months , have visited many doctors and have been given the sam medicine over and again but no improvement and now i have severe chest congestion as well kindly help,i dont know what is that which iam allergic to [/INST] Hello. Thank you for asking at Chat Doctor. I went through your history. Were I treating you, looking at your symptom severity, I would suggest you intranasal corticosteroid sprays for 1-2 weeks and montelukast for 2-4 weeks. Once your symptoms are well controlled, I would change over to montelukast and levocetirizine. Apart from above, I would also suggest you daily nasal saline sprays 3-4 times. For chest congestion, montelukast may work, personally I would prescribe a bronchodilator-expectorant cough syrup at the beginning. I would also suggest you regular breathing exercises and nutritive diet rich in vitamins and minerals with adequate warm fluids. Please avoid exposure to smoke, dusts and air-pollution as much as possible. For diagnosis of allergy, I would suggest you to consult an Allergist-Immunologist who will perform allergy testing and suggest avoidance measures and allergen specific immunotherapy, if appropriate. Hope this will be helpful to you. Wish you fast recovery and the best of the health. Regards. </s>