I am a 23-year-old male with a persistent dry cough and redness with cobblestone appearance at the back of my throat. My chest X-rays 3 times and Pulmonary Function Tests 2 times are normal, with recent values showing FVC 92% and FEV1 95%. CRP is negative, and I have no issues with eating or sleeping. My IgE level is high 682 and Recent allergy testing shows strong reactions to dust mites and cockroaches. A CT scan of my sinuses (March 16, 2026) shows a deviated nasal septum to the right, concha bullosa on the left, and mild sinus swelling, but normal drainage pathways. Its been 2 month 10 days to this problem but i got nasal spray after 1.5 month now cough is improved & its occasional Could this be allergic rhinosinusitis with post-nasal drip (UACS), and is nasal spray treatment & antihistamine is enough should I consider or HDM T Sensimune SLIT immunotherapy?