Linear psoriasis and Koebner phenomenon: A review.

Area of Science:

• Dermatology
• Genetics

Background:

• Linear psoriasis (LP) is an uncommon variant of psoriasis.
• It presents as psoriatic papules and plaques along Blaschko lines.
• LP is classified into isolated and superimposed types.

Purpose of the Study:

• To review the epidemiology, clinicopathology, and diagnosis of LP.
• To discuss current therapies for LP.
• To explore the pathogenesis and relationship between LP and the Koebner phenomenon (KP).

Main Methods:

• Literature review of epidemiological characteristics.
• Analysis of clinicopathological features.
• Summary of diagnostic and therapeutic approaches.

Main Results:

• LP exhibits a linear Blaschko distribution.
• The Koebner phenomenon (KP) is frequently associated with LP.
• Genetic mosaicism is a potential, though not fully elucidated, pathogenic mechanism.

Conclusions:

• LP requires careful diagnosis and differential diagnosis.
• Understanding the link with KP and genetic factors is crucial for pathogenesis.
• Further research is needed to fully illustrate LP's origins and management.