hello, A 50 yr. old patient reported to the dental clinic with tingling sensation over the right cheek region for 2 months. No h/o trauma, dizziness , severe headache, paraesthesia, running nose , URTI, blurring of vision. No sign of inflammation, no tenderness over maxillary sinus region. NO intraoral pathology detected which could explain the symptom. please kindly give your opinion on the probable causes of the symptoms with treatment plan.