The Dermoscopic “Chromosome Arms Sign” for Terra Firma-Forme Dermatosis

*Corresponding author: Mario Cutrone, Julie Van Gysel and Ramon Grimalt*

Abstract

Introduction
Terra firma-forme dermatosis (TFFD) belongs to the group of “dirty dermatoses” and represents a not well-known and surely underestimated skin condition.
Clinical cases
We present 2 cases of TFFD and present clinical and dermatoscopical findings.
Results
We present specific dermatoscopical findings of TFFD.
Conclusion
We propose the denomination “chromosome arms” sign for Terra firma-forme dermatosis.
Keywords
Terra firma-forme dermatosis; Dirtydermatoses; Dermatoscopy; Chromosome arms; Duncan’s dermatosis.