{'fraction_non_alphanumeric': 0.029508196721311476, 'fraction_numerical': 0.004918032786885246, 'mean_word_length': 5.4603174603174605, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Polymorphous light eruption with complication of solar urticaria revealed by phototesting

Dear Editor, Polymorphous light eruption (PLE) is an acquired idiopathic photosensitivity disorder characterized by a delayed-type reaction involving various types of eruptions. In contrast, solar urticaria (SU) is an acquired immediate-type photosensitivity disorder characterized by wheals, and rarely includes faint erythema or anaphylaxis. Thus, these disorders have distinct clinical features and are clearly differentiated by phototesting. We report a case of PLE with a complication of SU revealed by phototesting for PLE. A 20-year-old woman experienced papular eruptions on the face and dorsal hands every spring, and was followed for hydroa vacciniforme in a local clinic for 10 years. She had no personal history of atopy. Physical examination showed red papules with crust on the dorsal hands (Fig. 1a,b), cheeks and neck. Epstein–Barr (EB) virus, antinuclear antibodies and porphyria profiles were normal. Histological examination of a papule on the dorsal hand revealed irregular acanthosis and perivascular mononuclear cell infiltrations (Fig. 1c). EB virusencoded RNA staining was negative. PLE was suspected, and