The term nasal crease, as used here, refers to a persistent transverse hyperpigmented or hypopigmented line extending across the junction of the lower and middle thirds of the bridge of the nose. It is always at the site of the natural crease of the skin that is produced when the tip of the nose is pushed upward, as in the "allergic salute."1,4 ("Allergic salute" refers to the habitual manipulation of the nose, due to chronic obstruction and itching. It is typically accomplished by pushing the tip of the nose upward with the palm of the hand.) This nasal crease varies from a faint, or temporary, line to the distinct atrophic scars illustrated by our adult patients. Several of the faint ones disappeared in a few months after nasal symptoms had been relieved. I am not, of course, referring to the temporary blanching of the skin in this area immediately
Myers WA. The "Nasal Crease": A Physical Sign of Allergic Rhinitis. JAMA. 1960;174(9):1204–1206. doi:10.1001/jama.1960.63030090021017c
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