The study will be conducted to investigate the efficacy of posterior nasal neurectomy in control of recurrence and improvment of allergic symptoms in patients with allergic rhinitis combined with nasal polyposis

Allergic rhinitis patients with nasal polyposis will go through FESS combined with posterior nasal neurectomy to detect recurrence rate

Inclusion Criteria:

• all cases presented to ENT department Assuit University with allergic rhinosinusitis with nasal polyposis

Exclusion Criteria:

• refusing enrollment into the study. Pregnant women Refusing surgery Containdication to surgery Patients with aspirin syndrome