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We evaluated the effectiveness of intralesional injections of corticosteroids in the therapy for nodulocystic acne. Triamcinolone acetonide at a concentration of 0.63 mg/mL was as efficacious as a higher concentration of 2.5 mg/mL. Betamethasone phosphate had little, if any, effect on nodulocystic acne lesions at concentrations of 3.0, 1.5, and 0.75 mg/mL, when compared with saline controls.
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Robert M. Levine (1983) studied this question.
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