Topical treatments for chronic plaque psoriasis

Area of Science:

• Dermatology
• Pharmacology

Background:

• Chronic plaque psoriasis is the most common form of psoriasis, characterized by redness, thickness, and scaling.
• Topical treatments, including vitamin D analogues and corticosteroids, are the first-line management for this condition.

Purpose of the Study:

• To compare the effectiveness, tolerability, and safety of topical treatments for chronic plaque psoriasis against placebo.
• To compare vitamin D analogues with other topical treatments for psoriasis.

Main Methods:

• Systematic review of 131 randomized controlled trials (RCTs) involving 21,448 participants.
• Data extraction and quality assessment by two authors, with efforts to obtain missing data.
• Searched multiple databases including Cochrane Library, MEDLINE, and EMBASE up to 2005.

Main Results:

• Vitamin D analogues and corticosteroids were significantly more effective than placebo.
• Very potent corticosteroids showed greater benefits than potent ones (SMD: -1.29 vs. -0.95).
• Combination therapy with vitamin D and corticosteroids outperformed monotherapy; corticosteroids had fewer local adverse events than vitamin D.

Conclusions:

• Topical corticosteroids demonstrate comparable efficacy to vitamin D analogues for chronic plaque psoriasis.
• Corticosteroids are associated with a lower incidence of local adverse events compared to vitamin D analogues.
• Further research is needed to guide long-term maintenance treatment strategies.