“…In a two-year prospective study on the pattern of clinical features of chronic simple rhinosinusitis in Port Harcourt, da Lilly-Tariah [ 7 ] reported 72.7% cases of chronic infective rhinosinusitis as the commonest type of rhinosinusitis followed by vasomotor rhinitis with allergic rhinosinusitis being the least in his series. These were not consistent with other studies [ 6 , 17 , 20 , 24 , 25 ] where allergic rhinosinusitis was commoner when compared to infective CRS. In some of these studies [ 6 , 20 , 24 ], features of both acute and chronic types were considered together irrespective of the duration of the symptoms and allergy was found commonly among patients with acute type of rhinosinusitis.…”