Inferior turbinate hypertrophy is generally associated with the following causes: chronic inflammation: chronic rhinitis, vasoconstrictive rhinitis, allergic rhinitis, drug rhinitis, etc., causing capillary dilation and increased permeability of the nasal mucosa, increased plasma exudation and infiltration of various inflammatory cells, tissue oedema and inferior turbinate hypertrophy; congenital or acquired deviation of the nasal septum can cause hypertrophy of the mucous membrane of the contralateral inferior turbinate, bone hyperplasia and hypertrophy; long-term blind use of decongestants can cause drug-dependent swelling of the nasal mucosa and inferior turbinate hypertrophy.