IGHE and allergic rhinitis: Nevertheless, other studies showed that levels of ssIgE to dust mites may predict the severity of allergic rhinitis: patients with mild intermittent symptoms had significantly-lower dust mite-specific IgE (median, 6.91kU/L) compared with those with mild persistent symptoms (median, 14.2 kU/L) and those with moderate-to-severe persistent symptoms (median, 30.7 kU/L) [46].