Publications by authors named "Stefano Francalanci"
Evaluation of nine patients with solar urticaria during summer.
G Ital Dermatol Venereol
December 2020
Background: Evaluation of possible photoallergic contact dermatitis in at-risk populations is often not undertaken, and an agreed methodology for investigation is uncommonly used.
Objectives: We conducted a retrospective multicentre study to determine the prevalence of photoallergic contact dermatitis in Italy.
Methods: A total of 1082 patients with histories and clinical features suggestive of photoallergic contact dermatitis were evaluated.
A 53-year-old man developed lichenoid lesions on the upper chest, posterior surfaces of the trunk, and abdominal region about three months before his first visit. Physical examination and laboratory findings were normal; histopathology showed vacuolar degeneration of basal keratinocytes in association with a dense lympho-histioid infiltrate arranged in a lichenoid pattern with a few melanophages and eosinophils. The fact that our patient had been irregularly taking sildenafil citratus (Viagra) led to the hypothesis of a lichenoid drug-induced eruption.
View Article and Find Full Text PDFSystemic contact dermatitis may occur in contact-sensitized individuals when they are exposed to haptens orally, transcutaneously, intravenously or by inhalation. We report the case of a woman developing a diffuse skin eruption after the topical use of Rhus toxicodendron alcoholic extract and the oral introduction of a homeopathic preparation of the same substance for herpes treatment. An open test, performed with the Rhus toxicodendron tincture, showed an erythemato-oedematous response at 48 h and vesicular reaction at 96 h that was still present after 7 days.
View Article and Find Full Text PDFBackground: Eyelids can be affected by various types of dermatitis that are often difficult to diagnose.
Objective: The aim of the study was to establish some guidelines for a correct diagnosis.
Methods: A total of 447 patients treated at 12 research units for eczema or other inflammatory dermatitis located on the eyelids were invited to complete a questionnaire.