When vitamin A is deficient, the nasal mucosa epithelium undergoes degenerative changes and glandular secretion is reduced, which can lead to nasal dryness. In vitamin B deficiency, it can lead to metabolic disorders of epithelial cells and weakened mucosal resistance, which induces nasal dryness.
In addition to the related vitamin deficiency, it can also be caused by diseases such as atrophic rhinitis, nasal scleritis, dry rhinitis, etc. It is recommended to visit a hospital for examination to clarify the diagnosis.
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