[Reflexphotometric determinations of vasoconstriction after topical application of steroids. V. Vasoconstriction phaenomenon and tachyphylaxis after repeated steroid application (author's transl)].

On the basis of reflexphotometrical vasoconstriction tests it is demonstrated, that the intensity of vasoreactions caused by a first topical application of steroids, diminishes rapidly after repeated applications, until there is no response of vessels to a new application. This phaenomenon is know as tachyphylaxis and has been found in all tested glucocorticoids.