Lupus erythematosus tumidus: an underestimated entity

Area of Science:

• Dermatology
• Dermatopathology
• Immunodermatology

Background:

• Lupus erythematosus tumidus (LET) is infrequently documented in scientific literature.
• Textbooks often provide minimal or no coverage of LET.
• This highlights a gap in the understanding and reporting of this specific lupus variant.

Observation:

• This report details an additional case of lupus erythematosus tumidus.
• The case contributes to the recognition of LET as an underdiagnosed disorder.
• It is the first documented case of LET in Portugal, expanding its known geographical distribution.

Findings:

• The case supports LET's classification as a distinct entity within chronic cutaneous lupus erythematosus spectrum.
• Clinical, photobiological, and histological characteristics of LET are presented.
• Differential diagnosis, treatment strategies, and prognosis for LET are discussed.

Implications:

• Increased awareness and reporting of LET are crucial for better diagnosis and management.
• Further research into LET's specific features and prevalence is warranted.
• This case contributes to the global understanding of rare lupus erythematosus variants.