Your medical specialist portal

Altmeyer's Encyclopedia is an independent, evidence-based medical information resource on specialist level. Since 1986 it has been continuously updated and expanded by only the most accomplished medical professionals in their field. It offers access to over 62,600 up to date articles and 13,300 high quality images from various disciplines.

News from the department of Dermatology

Latest entry in the department of Dermatology:


Urtica Definition Urtica or wheal is defined as a transient elevation of the skin, with a smooth non-scaling surface. Its extent can range from 0.2-10.0 cm (or larger). The color of urtica varies from white to pale red to bright red, depending on the particular phase of development. Urticae may b...

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Prof. Dr. med. Peter Altmeyer


One of Germany's most accomplished dermatologists with decades of expertise in clinical dermatology. Emeritus professor at the Ruhr-Universit├Ąt Bochum, author of more than 30 textbooks and over 700 scientific publications.