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Haare pp 27-40 | Cite as

Haarbiologische Grundlagen und pathobiologische Erwägungen

  • Ralph M. Trüeb

Zusammenfassung

Während die biologischen Funktionen des Haars (Tab. 3.1) im Zuge seiner entwicklungsgeschichtlich bedingten Reduktion weitgehend in den Hintergrund getreten sind, dominiert beim Menschen die soziale Kommunikationsfunktion vornehmlich der Kopf- und Sexualbehaarung. Einzig den Augenbrauen, Wimpern und Vibrissae im Naseneingang kommt weiterhin eine wichtige Schutzfunktion zu. Fehlen z. B. Augenbrauen und Wimpern (im Rahmen einer Alopecia areata), können Schweiß von der Stirn und Staub leichter ins Auge dringen und zu Reizungen der Konjunktiva führen. Aber auch die Kopfbehaarung bietet einen Schutz vor UV-Strahlen. Nicht selten entstehen aktinische Keratosen (Präkanzerosen) und Karzinome auf dem Boden einer chronisch UV-geschädigten, meist androgenetisch bedingten Alopezie.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Ralph M. Trüeb
    • 1
  1. 1.Dermatologische KlinikUniversitätsSpital ZürichSwitzerland

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