History of epicutaneous testing: the blotting-paper and other methods.

The first detailed description of an epicutaneous test in a case of allergy was probably in 1847 by Städeler, a chemist at the University of Göttingen. A review of the history of the tests is given; touch and other investigations such as Städeler's blotting paper strip, Jadassohn's application method (1895) and Fabre's blotting-paper square (1897).