Rhinitis very common. Allergic rhinitis is more common in some countries than others; in the United States, about 10%–30% of adults are affected annually. Mixed rhinitis (MR) refers to patients with nonallergic rhinitis and allergic rhinitis. MR is a specific rhinitis subtype. It may represent between 50 and 70% of all AR patients. However, true prevalence of MR has not been confirmed yet. Rhinitis is categorized into three types (although infectious rhinitis is typically regarded as a separate clinical entity due to its transient nature): (i) infectious rhinitis includes acute and chronic bacterial infections; (ii) nonallergic (vasomotor) rhinitis includes idiopathic, hormonal,
Double Allergic space. Powderfinger spent less money producing "Double Allergic" than on their previous works. Previously, the band had worked with Tony Cohen, whom Fanning stated was expensive due to his success in the industry. For "Double Allergic" the band chose Tim Whitten, a less well known producer, and because the band knew what they intended to do as they entered the studio they managed to spend less despite the improved sound. Middleton commented on Whitten's capabilities in the recording studio, saying "He's what a band looks for in a producer/engineer, because he's got his own ideas", but stating that Whitten would