BACKGROUND Actinic prurigo is an idiopathic photodermatosis, the pathophysiology of which has been hypothesized to involve subtype IV type b (Th2) hypersensitive response, whereby IL4, IL5, and IL13 are secreted and mediate the production of B cells, IgE, and IgG4. OBJECTIVES To examine the association of serum IgE levels and the clinical severity of injuries. METHODS This case-control stud...

With the continued development of non-invasive therapies for actinic keratosis such as PDT and immune therapies, the non-invasive diagnosis and monitoring become increasingly relevant. High-definition optical coherence tomography is a high-resolution imaging tool, with micrometre resolution in both transversal and axial directions, enable to visualize individual cells up to a depth of around 57...

BACKGROUND Actinic keratosis is a precursor to cutaneous squamous cell carcinoma. Long treatment durations and severe side effects have limited the efficacy of current actinic keratosis treatments. Thymic stromal lymphopoietin (TSLP) is an epithelium-derived cytokine that induces a robust antitumor immunity in barrier-defective skin. Here, we investigated the efficacy of calcipotriol, a topical...

Actinic cheilitis is a subtype of actinic keratosis that mainly affects the lower lip and has a higher risk of malignant transformation. Its location on the labial mucosa influences the therapeutic approach. Vermilionectomy requires local or general anesthetic and is associated with a risk of an unsightly scar, and the treatment with 5-fluorouracil or imiquimod lasts for several weeks and the i...

Actinic cheilitis can progress to squamous cell carcinoma in 20% of cases. The purpose of this study was to identify the clinical characteristics of 75 patients with actinic cheilitis and to summarise the current literature concerning actinic cheilitis. A total of 75 patients were evaluated over a 3-year period. The medical history, physical examination results and images were collected from ea...

To study the mechanism and risk of human skin cancer from solar light, we exposed human skin transplanted to severe combined immunodeficient mice to daily doses of UVB for periods of approximately 2 years. We have succeeded for the first time in inducing cancer and solar (actinic) keratosis in human skin by UVB. Of 18 normal skins exposed to doses of 7.3 x 10(5) to 1.8 x 10(6) J/m2, 14 actinic ...

Dear Editors, Lentigo maligna (LM) and lentigo maligna melanoma (LMM) represent one of the four main subtypes of melanoma, presenting most commonly in chronically sun-exposed areas of the head and neck, with a predilection for the cheek and less commonly on arms, legs and trunk. Leg localisation is the most frequent extrafacial site. Amelanotic LM constitutes a clinical challenge, because it ca...

Granuloma annulare is a benign, relatively common dermatosis of childhood and young adults. Lesions typically occur on the extremities. Localized facial and periocular involvement is rare. We describe a 25- year-old woman with asymptomatic skin-color, firm, and papular lesions on both periocular areas since 6 months ago. Histological examination revealed palisading necrobiotic granuloma, charac...

A spectrum evaluator based on a system of four materials has been applied to the evaluation of actinic ultraviolet exposures to humans. The exposures were evaluated between early morning and near noon in summer and the actinic irradiances calculated ranged from 3 μW cm to 5 μW cm. Simultaneously, the broad band irradiances which induced the actinic exposures and/or the biologically effective ex...