What is a common side effect of inhaled corticosteroids?

A. Sores may occur from mouth trauma or viral infections but are not a common side effect of inhaled corticosteroids. B. Hairy tongue is a rare condition usually linked to poor oral hygiene or antibiotic use, not inhaled corticosteroids. C. Thrush (oral candidiasis) is a common side effect of inhaled corticosteroids. The medication can suppress local immunity in the mouth and throat, allowing Candida (yeast) to overgrow. This is why patients are advised to rinse their mouth after using inhaled corticosteroids. D. Bad breath may result from dry mouth or infections but is not a primary or common side effect of this medication.