Editing Corticosteroid (section)

===By chemical structure===
In general, corticosteroids are grouped into four classes, based on chemical structure. Allergic reactions to one member of a class typically indicate an intolerance of all members of the class. This is known as the "Coopman classification".<ref name="isbn1-55009-378-9">{{cite book | vauthors = Rietschel RL |title=Fisher's Contact Dermatitis, 6/e |publisher=BC Decker Inc |location=Hamilton, Ont |year=2007 |page=256 |isbn=978-1-55009-378-0 }}</ref><ref name="pmid2757954">{{cite journal | vauthors = Coopman S, Degreef H, Dooms-Goossens A | title = Identification of cross-reaction patterns in allergic contact dermatitis from topical corticosteroids | journal = The British Journal of Dermatology | volume = 121 | issue = 1 | pages = 27–34 | date = July 1989 | pmid = 2757954 | doi = 10.1111/j.1365-2133.1989.tb01396.x | s2cid = 40425526 }}</ref>

The highlighted steroids are often used in the screening of allergies to topical steroids.<ref name="Wolverton2001">{{cite book | vauthors = Wolverton SE |title=Comprehensive Dermatologic Drug Therapy |publisher=WB Saunders |year=2001 |page=562 }}</ref>

====Group A – Hydrocortisone type====
[[Hydrocortisone]], [[hydrocortisone acetate]], [[cortisone acetate]], [[tixocortol pivalate]], [[prednisolone]], [[methylprednisolone]], and [[prednisone]].

====Group B – Acetonides (and related substances)====
[[Amcinonide]], [[budesonide]], [[desonide]], [[fluocinolone acetonide]], [[fluocinonide]], [[halcinonide]], [[triamcinolone acetonide]], and [[Deflazacort]] (O-isopropylidene derivative)

====Group C – Betamethasone type====
[[Beclometasone]], [[betamethasone]], [[dexamethasone]], [[fluocortolone]], [[halometasone]], and [[mometasone]].

====Group D – Esters====

=====Group D<sub>1</sub> – Halogenated (less labile)=====
[[Alclometasone dipropionate]], [[betamethasone dipropionate]], [[betamethasone valerate]], [[clobetasol propionate]], [[clobetasone butyrate]], [[fluprednidene acetate]], and [[mometasone furoate]].

=====Group D<sub>2</sub> – Labile prodrug esters=====
[[Ciclesonide]], [[cortisone acetate]], [[hydrocortisone aceponate]], [[hydrocortisone acetate]], [[hydrocortisone buteprate]], [[hydrocortisone butyrate]], [[hydrocortisone valerate]], [[prednicarbate]], and [[tixocortol pivalate]].