In this special episode of Voices of Otolaryngology, developed on behalf of the AAO-HNS Allergy, Asthma, and Immunology Committee, Matthew W. Ryan, MD, talks with Antoine Azar, MD, about how otolaryngologists often see immunodeficiency patients first through recurring infections. Learn about screening techniques, key warning signs, and treatment approaches for conditions affecting up to 23% of chronic sinusitis patients. Discover why collaboration between otolaryngology and immunology specialists is crucial for optimal patient outcomes.