Seborrheic dermatitis is a common inflammatory condition mainly affecting scalp, face and other seborrheic sites, characterized by a chronic relapsing course. The mainstay of treatment includes topical therapy comprising antifungals (ketoconazole, ciclopirox olamine) and anti-inflammatory agents along with providing symptomatic relief from itching. Oral antifungals and retinoids are indicated only in the severe, recalcitrant cases. The objective of this review is to discuss various topical antifungals available for use in seborrheic dermatitis of scalp, face and flexural areas, discuss their efficacy and safety profiles from relevant studies available in the literature along with upcoming novel delivery methods to enhance the efficacy of these drugs.
Keywords: Seborrheic dermatitis; Antifungal agents; Ketoconazole; Ciclopirox
Topical Antifungals used for Treatment of Seborrheic Dermatitis
2/8Copyright: ©2017 Chowdhry et al. . Absorption of ketoconazole through the skin is insignificant, with no ketoconazole detected in plasma after topical application of ketoconazole cream or shampooing. Approximately 5% of the drug is found to penetrate into the hair keratin 12 hours after a single shampoo. It is classified as a pregnancy category C drug [10]. Various studies conducted on ketoconazole have used it in varying doses. The most frequent dose was 2% twice daily every day over face and 2% twice a week over scalp [6].
CitationOther formulations of this drug have also yielded similar efficacy as the cream formulation. Elewski et al. [13] evaluated the efficacy and safety of twice-daily treatment with ketoconazole 2% foam for seborrheic dermatitis on the scalp, body, and face on 1162 patients and concluded that it was as effective as twice daily use of ketoconazole 2% cream. Another study evaluated the efficacy and safety of a once-daily, ketoconazole 2% gel treatment in moderate to severe seborrheic dermatitis in 459 patients and observed that a significantly greater percentage of subjects were successfully treated with this gel compared with vehicle (25.3% vs. 13.9%, P = 0.0014) [14].The Cochrane Skin Group recently conducted a meta-analysis for studies published so far on the use of topical antifungals for SD and they concluded that as compared to placebo group, participants taking ketoconazole were 31% less likely to have symptoms persisting at four weeks of follow-up. It was usually well tolerated but common side effects included increased skin redness or itching, burning sensation and hair loss [6]. The US FDA in 2013 has issued a safety guideline stating that angioedema can be caused by ketoconazole 2% shampoo [15].Ortonne et al. [16] in a single-blinded study observed 62 patients with SD over scalp, face and chest who were treated topically with a 2% ketoconazole foaming gel or with a 0.05% betamethasone dipropionate lotion for 4 months. At the end of treatment, the response rate for ketoconazole 2% foaming gel was significantly higher than that for betamethasone dipropionate 0.05% lotion according to ...