Psychiatric Disorders : psychic disturbances, psychological dependence, insomnia. A wide range of psychiatric reactions including affective disorders ( such as irritable, euphoric, depressed and labile mood, and suicidal thoughts), psychotic reactions (including mania, delusions, hallucinations and aggravation of schizophrenia), behavioural disturbances, irritability, anxiety, sleep disturbances, and cognitive dysfunction including confusion and amnesia have been reported. Reactions are common and may occur in both adults and children. In adults, the frequency of severe reactions have been estimated to be 5-6%. Psychological effects have been reported on withdrawal of corticosteroids; the frequency is unknown.
Corticosteroid therapy may induce glucose intolerance by reducing the utilization of glucose in tissues and increasing hepatic glucose output. Diabetes mellitus requiring diet modifications and hypoglycemic agents has developed in some patients.
Adrenal suppression can persist for up to twelve months after long-term corticosteroid therapy. Giving corticosteroids once a day or once every other day may reduce adrenal suppression. After corticosteroid therapy has been tapered, supplemental corticosteroid therapy during times of physical stress may be required. [ Ref ]
The first isolation and structure identifications of prednisone and prednisolone were done in 1950 by Arthur Nobile .    The first commercially feasible synthesis of prednisone was carried out in 1955 in the laboratories of Schering Corporation, which later became Schering-Plough Corporation , by Arthur Nobile and coworkers.  They discovered that cortisone could be microbiologically oxidized to prednisone by the bacterium Corynebacterium simplex. The same process was used to prepare prednisolone from hydrocortisone .