Summary
Two patients suffering from ARC and AIDS developed extensive whitening of toe nails caused by infection with T. rubrum. The lesions may serve as a clinical clue to the diagnosis of HIV‐infection with immune deficiency.
The Scandinavian photopatch test procedure has been applied to 745 patients with suspected photodermatoses during the years 1980-1981. Our experience has been encouraging with the recording of several relevant reactions. A total of 132 positive photocontact reactions and 120 ordinary contact reactions were seen. Photocontact reactions to musk ambrette (19 cases) and PABA (19 cases) were surprisingly frequent. The next most common photocontact reactions were to promethazine (24), chlorpromazine (22 cases) and fentichlor (12). Ordinary contact reactions were observed to balsam of Peru (30), PABA (23), lichen mix (21), wood mix (14) and to perfume mix (10).
The Candida inhibition method of Daniels was used for monthly determinations of the relative amounts of phototoxic substances in giant hogweed from April to September. Significant seasonal variations were found in the highest content of active constituents in April and May, with a decrease in the following months. Except in May (where it was highest for the root), the highest content of phototoxic substances was found in the leaves. It was lower in the root and lowest in the stem and stalk.
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