Topical colchicine therapy for recalcitrant psoriasis

Area of Science:

• Dermatology
• Pharmacology

Background:

• Psoriasis is a chronic inflammatory skin condition.
• Recalcitrant psoriatic plaques often require intensive treatment.
• Topical therapies are a cornerstone of psoriasis management.

Purpose of the Study:

• To evaluate the efficacy of topical colchicine for recalcitrant psoriasis.
• To determine optimal concentrations and formulations for topical colchicine therapy.

Main Methods:

• Daily application of 1.0% colchicine in hydrophilic ointment for 6-12 weeks.
• Investigated lower concentrations (0.25%, 0.50%) with occlusion.
• Compared hydrophilic petrolatum base with hydrophilic ointment base.

Main Results:

• Substantial resolution of psoriatic plaques observed with 1.0% colchicine.
• Lower concentrations (0.25%, 0.50%) were effective with occlusion.
• Hydrophilic petrolatum base showed greater efficacy than hydrophilic ointment base.

Conclusions:

• Topical colchicine is a potential treatment for localized, thick psoriatic plaques.
• Effective for psoriasis when other treatments fail.
• Further research needed on percutaneous absorption before widespread use.