Which symptom can occur if the mouth is not rinsed after using an inhaled corticosteroid?

Using an inhaled corticosteroid can lead to an overgrowth of Candida, a type of yeast, in the oral cavity if the mouth is not rinsed after administration. This happens because the corticosteroid can alter the normal balance of microorganisms in the mouth, creating a favorable environment for the growth of yeast. Rinsing the mouth after using the inhaler helps to remove residual medication, thereby minimizing the risk of infection and maintaining oral health.

The other symptoms listed, such as dry mouth, frequent coughing, and persistent throat irritation, can occur for various reasons related to other factors, but they are not directly connected to the use of inhaled corticosteroids in the same way that candidiasis is. Proper oral hygiene after using inhaled corticosteroids is critical in preventing the development of oral thrush, making it important for patients to be aware of this risk.