Nodular prurigo-like eruptions induced by etretinate

Area of Science:

• Dermatology
• Pharmacology

Background:

• Etretinate (Tigason) is a systemic retinoid used for treating various skin conditions.
• Adverse drug reactions can significantly impact patient treatment and outcomes.

Observation:

• Two patients undergoing etretinate therapy presented with a distinct nodular prurigo-like eruption.
• The eruption's morphology mimicked classic prurigo nodules.

Findings:

• A nodular prurigo-like eruption was identified as an unusual side-effect of etretinate treatment.
• This suggests a potential, albeit rare, dermatological adverse reaction to etretinate.

Implications:

• Clinicians should be aware of this potential side-effect when prescribing etretinate.
• Further investigation may be warranted to understand the mechanism behind this reaction.