Psychiatric adverse effects of corticosteroids.

Psychiatric adverse effects during systemic corticosteroid therapy are common. Two large meta-analyses found that severe reactions occurred in nearly 6% of patients, and mild to moderate reactions occurred in about 28%. Although disturbances of mood, cognition, sleep, and behavior as well as frank delirium or even psychosis are possible, the most common adverse effects of short-term corticosteroid therapy are euphoria and hypomania.