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Journal of the American Academy of Dermatology
Volume 44, n° 4
pages 612-615 (avril 2001)
Doi : 10.1067/mjd.2001.112386
accepted : 18 October 2000
The lines of Blaschko on the head and neck
 

Rudolf Happle, MD, Atessa Assim, MD
Department of Dermatology, Philipp University of Marburg. Marburg, Germany 

Abstract

Background: The system of Blaschko's lines has been insufficiently documented on the head and neck. Objective: The aim of the study was to elaborate this pattern in a comprehensive way. Method: One hundred eighty-six figures showing skin lesions following Blaschko's lines on the head and neck were collected from literature and patient files, transposed into drawings, and subsequently categorized according to 3 standard perspectives. Transparent sheets were superimposed to delineate an archetypical pattern. Results: The definite lines are presented in a frontal, lateral, and dorsal view. On the face they show an hourglass-like configuration converging on the nasal root. However, in several areas these lines intersect at an angle of almost 90°. On the scalp they form a spiral configuration. Conclusion: The system of Blaschko's lines on the head and neck as elaborated by this study is more precise than previously published diagrams. Remarkably, this archetypical pattern shows definite crossing of lines. (J Am Acad Dermatol 2001;44:612-5.)

The full text of this article is available in PDF format.

 Reprint requests: Rudolf Happle, MD, Department of Dermatology, University of Marburg, Deutschhausstrasse 9, 35033 Marburg, Germany. E-mail: happle@mailer.uni-marburg.de.
 J Am Acad Dermatol 2001;44:612-5



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