Function
Both corticotropin and tetracosactide have been used for diagnostic purposes to determine adrenocortical insufficiency,
particularly in Addison's disease, via the ACTH stimulation test.However, as of 2015 the US label for corticotropin does
not include diagnostic use.

Both corticotropin and tetracosactide have been used for therapeutic purposes. In the US the tetracosactide label is limited
to diagnosis but the UK label provides for therapeutic uses.
In the US corticotropin is used to treat epileptic spasms in infants, acute exacerbations of multiple sclerosis in adults; acute
episodes of psoriatic arthritis and rheumatoid arthritis and ankylosing spondylitis; in acute exacerbations or as maintenance
therapy for the collagen disorders like systemic lupus erythematosus and systemic dermatomyositis; for skin conditions like
severe erythema multiforme and Stevens-Johnson syndrome; for serum sickness; for severe acute and chronic allergic and
inflammatory processes involving the eye such as keratitis, iritis, iridocyclitis, diffuse posterior uveitis, choroiditis, optic neuritis,
chorioretinitis, and anterior segment inflammation; sarcoidosis in the lungs; and to treat edema in certain nephrotic syndromes.

In the UK tetracosactide is used for short-term therapy in conditions for which glucocorticoids are usually used but for some reason
should not be; some uses include use for people who don't respond to glucocorticoids or cannot tolerate them who have ulcerative
colitis, Crohn's disease, juvenile rheumatoid arthritis, rheumatoid arthritis, or osteoarthrosis.