Patients with dry pain and crusting inside the nose are often associated with chronic inflammatory diseases of the nasal mucosa, and some patients may also have a combination of chronic sinusitis, where the nasal mucosa is often in a state of chronic congestion and swelling. The nasal tract may also accumulate some purulent inflammatory secretions, which, after a long period of time, may easily form dry crusts or pus crusts and adhere to the surface of the nasal mucosa, forming a continuous irritation to the nasal mucosa. At the same time, patients may also be affected by long-term smoking, drinking, eating spicy and irritating food and other factors, and may also be affected by prolonged exposure to air pollution or mental and emotional stress, which can easily lead to the onset of similar symptoms.