If you have a serious asthma attack (exacerbation), your doctor may prescribe a short course of oral c orticosteroids. When used orally for less than two weeks, the side effects of corticosteroids are less likely, but when used for many months, they can have a serious and permanent effect. After the severe symptoms of your asthma attack have been successfully treated and controlled, your doctor will work with you to minimize your need for prednisone in the future. Faithfully taking an inhaled corticosteroid every day is the most commonly successful method to do this.
Steroid nasal sprays rarely cause side-effects. This is because they are applied directly to the nose and very little of this medicine is absorbed into the body. Therefore, they are much less likely to cause side-effects in other parts of the body. Occasionally, they cause dryness, crusting, and bleeding of the nose. If this occurs, stop it for a few days and then restart. There have been reports of nasal steroids possibly having an effect on behaviour, particularly in children. This is thought to be rare. However, a few people have reported hyperactivity, problems sleeping, anxiety, depression, and aggression.