Lamminger C, Pagenstecher A, Schröter R
Universitäts-Hautklinik Heidelberg.
Hautarzt. 1991 Jan;42(1):48-9.
In a patient with lichen ruber, skin lesions appeared exclusively on sun-exposed sections of the body. This localization is atypical in Europe. In tropical and subtropical countries lichen ruber actinicus can be observed in up to 30% of the population.