Class A: Hydrocortisone and tixocortol type
Class B: Triamcinolone acetonide type
Class C: Betamethasone type
Betamethasone – disodium phosphate
Dexamethasone – disodium phosphate
Class D: Hydrocortisone – 17-butyrate and clobetasone-17-butyrate type
Patients allergic to some corticosteroids should be told which of these four previously described classes of agents they should avoid.
Because two products in class A are available without a prescription – hydrocortisone and hydrocortisone acetate – the ingredient list of any medicated cream, lotion, or the like should be examined before purchasing, to be certain that it does not contain either agent.
Individuals who are allergic to agents in class B may also react to agents in class D.
May be duplicated for use in clinical practice. From Marks JG Jr, Elsner P, DeLeo VA:Contact and occupational dermatology, ed 3, St Louis, 2002, Mosby.
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