Anosmia / Smell Dysfunction - Differential Diagnosis Algorithm Nasal Obstruction/ URTI: • Septal Deviation • Allergic Rhinitis • Bacterial/ Viral Infection (Influenza) Trauma: • Foreign Body • Nasal Surgery • Base of Skull Fracture • Nasal Fracture Endocrine / Metabolic: • Alcoholism • Diabetes Mellitus • Adrenal Hypofunction • Adrenal Hyperfunction • Vitamin B12 Deficiency • Zinc Deficiency • Malnutrition Neoplastic: • Nasal Polyps • Juvenile Nasopharyngeal Angiofibroma Toxins and other Factors • Smoking • Drugs • Radiation • Toxin Exposure #Anosmia #Smelling #Dysfunction #Loss #Differential #Diagnosis #Algorithm #Causes
