“…Since this hypothesis, several authors researched the relationship between the hormone level and nasal phenotypic modifications. Some authors observed the same cytological changes between nasal mucosa and vaginal epithelium according to the menstrual cycle (Armengot, Basterra, & Marco, 1990; Caruso et al, 2001; Caruso et al, 2006; Caruso, Serra, Grillo, Agnello, et al, 2008; Henderson, 1956; Nappi et al, 2003; Navarrete‐Palacios et al, 2003; Philpott, Conboy, Al‐Azzawi, & Murty, 2004; Toppozada et al, 1981, 1984). They also observed some characteristics in nasal mucosa related to high levels of estrogen such as: vasodilation, enhancement of the vascularization, and increase of glandular secretion.…”