Sore Nostrils.
Causes and Symptoms.
In a healthy state, our nose is well protected. Cilia and a thin, viscous mucous membrane ensure that penetrating dirt particles and pathogens cannot settle in the nose and are quickly removed. During a cold, however, the mucous membrane loses moisture. As a result, the nasal secretion becomes viscous and impairs the activity of the cilia. Consequently, not only does the inside of the nose become sore, but reddened, inflamed areas and crusts often form around the nostrils. Constant nose blowing additionally irritates the sensitive skin, making it dry, flaky, and painful to the touch. Frequently, not only the nostrils are affected, and the unpleasant symptoms extend across the philtrum to the upper lip.
A sore, reddened nose is not only a troublesome side effect of colds with a runny nose. People who suffer from allergies such as hay fever are particularly frequently affected. Dry indoor air from heating and air conditioning also promotes drying of the mucous membranes, as do environmental irritants from exhaust fumes and fine dust or insufficient fluid intake.