Dexamethasone
Dr. Megan Ranney told CNN that the steroid dexamethasone can cause "mental health side effects." She also called some of Trump's behavior "concerning."
Doctors not involved in treating the president said the fact that he is on the steroid dexamethasone means his coronavirus infection is severe.
Dexamethasone has been proven to help in severe cases, according to researchers at Oxford University.
