The short answer to this question is "Yes." The concern here is having too much corticosteroid in your body if you are using an inhaled corticosteroid for asthma and a nasal corticosteroid spray for allergies. Make sure your doctor is aware of all your medications, including your inhaled corticosteroid for asthma. That way, they can suggest an appropriate treatment option for your allergies. If you need to use both an inhaled corticosteroid for asthma and a nasal corticosteroid spray for allergies, you and your doctor should work together to reduce medication use to the lowest effective dose.