See Also: photo-patch test(medicine)
patch test(encyclopedia)
patch test(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
photo-(dictionary)
photo(2)(dictionary)
Photo-(medicine)
photo(1)(dictionary)
photo(dictionary)
photo-(dictionary)

photo-patch test (medicine)


photo-patch test


A test of contact photosensitization: after application of a patch with the suspected sensitiser for 48 hours to two sites, if there is no reaction one area is exposed to a weak erythema dose of sunlight or ultraviolet light; if positive, a more severe reaction with vesiculation develops at the exposed patch area than the nonexposed skin patch site.