BACKGROUND: Allergic rhinitis (AR) is a prevalent chronic inflammatory airway disease with a range of symptoms that can significantly impact quality of life. This study aimed to explore the relationship between the severity of nasal symptoms and sexual function in AR patients. METHODS: A case-control study involving 1034 AR patients and 422 healthy controls was conducted. Nasal symptoms were assessed using Visual Analog Scale (VAS) scores, while sexual function was evaluated using the International Index of Erectile Function (IIEF) for males and the Female Sexual Function Index (FSFI) for females. RESULTS: In female AR patients, total FSFI scores, as well as scores for subjective arousal, orgasmic function, and intercourse satisfaction, were significantly decreased compared to controls. Nasal obstruction scores were significantly correlated with sexual desire, subjective arousal, orgasmic function, intercourse satisfaction, and total FSFI scores ( CONCLUSION: This study underscores the negative correlations between nasal symptoms and sexual function in AR patients, suggesting that AR may contribute to sexual dysfunction.