- 1935: Discovery of compound E (cortisone)
- 1948: First reported use of cortisone and adrenocorticotropic hormone (ACTH) in the treatment of rheumatoid arthritis
- 1951: First report of cortisone and ACTH used in the treatment of inflammatory dermatoses
- 1952: First report of using compound F (hydrocortisone) topically
Corticosteroids are synthetic relatives of the hormones produced by the adrenal glands, such as cortisone. Since the mid-1950s, there have been numerous modifications of the corticosteroid molecule that have dramatically increased the potency of this topical therapy (i.e., halogenation, esterification, hydroxylation, modification of side chains, and improvements in delivery systems). As the potency of the molecule has increased, so has the likelihood of side effects.