Studies With a Monochromator in the Common Idiopathic Photodermatoses.

An Optimal Method for Experimental Provocation of Polymorphic Light Eruption

“…12 However, Miyamoto 13 has confirmed earlier reports [22][23][24] that UV-B can also be successful in a high proportion (57%) of selected patients. In a retrospective study of 30 patients by Mastalier et al, 21 the action spectrum fell within the UV-A range in 59% of patients, the UV-B range in 23%, and both ranges in 18%.…”

Light Tests and Pathogenetic Wavelengths in Chronic Polymorphous Light Dermatosis

“…This had been found by Barber and Ilowitt (1926), Kesten and Slatkin (1953), Scott and Molhuysen-van der Walle (1958), and Rottier (1963. Probably the investigation of Magnus (1964) is more or less a definite answer to the problem. It was carried out with mono chromatic light, determ ination of the radiation energy used, and a papular reaction was required.…”

“…However, there remain some cases where all tests are negative although after a follow-up of several years we felt sure about the diagnosis. Rottier (1963) and Magnus (1964) had similar cases; it is obvious th a t the way in which natural sunlight acts upon the skin can never be im itated and that light tests can confirm the diagnosis but can never rule it out completely.…”

Photosensitivity Due to Chlortetracycline

“…This however, is not unusual in many diseases caused by light (Magnus, 1964 One of our patients showed a weak, but abnormal reaction to UV-A and in both patients the erythem a was much easier provoked by natural sunlight than by Xenon-arc light, but easier with the Xenonarc than with the m ercury lam p: this is exactly the sequence of the relative quantity of UV-A em itted by these lightsources.…”