<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi - I have been living in Bangalore for the last 1.5 yrs. Recently 6 months back I have developed allergic reaction runny nose, sneezing and sometime shortness of breath whenever weather changes to cold or rains start. Have been advised to use inhaler by Pulmonologist but am also trying Homeo. Any advice on how to build immunity to preventmitigate allergic reaction?  <response>: Hello dear, The symptoms as mentioned in your post can be attributed to Allergic rhino-tracheo-bronchitis. Presented with similar complaints, I usually treat my patients with:1. Tablet Allegra 60 mg twice a day or Tablet Levocetrizine 10 mg in the evening.2. Tablet Montelukast 10 mg in the evening.3. Stalin inhaler.4. Voice rest-avoid talking in loud voice for a long time.5. Stay protected from exposure to cold, dust other allergens.6. Steam inhalation.7. Avoid smoking, cold food Chat Doctor. 