Dermatological manifestations associated with COVID-19 and COVID-19 vaccination: results from the Lebanese COVID registry.

Background: A number of cutaneous manifestations and adverse cutaneous reactions have been associated with COVID-19 infection and vaccine.

Objectives: A Lebanese national registry was established to characterize the dermatologic manifestations and adverse cutaneous reactions associated with COVID-19 infection and vaccination in a sample of the Lebanese population.

Methods: An observational cross-sectional study was conducted via a web-based clinical form distributed to physicians wishing to report their cases from May 2021 till May 2022.

Treatment of pediculosis capitis with topical albendazole.

Pediculosis capitis, or head lice infestation, caused by Pediculus humanus capitis, is a common and ubiquitous health concern. Increasing resistance and treatment failures are reported with available topical pediculicides and may prove challenging to manage. Recent data indicate that the oral anti-helmintic agents thiabendazole and albendazole could represent new therapeutic options against pediculosis capitis.

[Paraneoplastic dermatoses].

Paraneoplastic cutaneous syndromes are non neoplastic conditions related and evolving in parallel to underlying malignancy. Their recognition is of particular importance since they can provide valuable hints for early diagnosis of underlying tumors. In this paper, authors emphasize the commonest and recently identified paraneoplastic cutaneous conditions.

Antineutrophil cytoplasmic antibodies of IgA class in neutrophilic dermatoses with emphasis on erythema elevatum diutinum.

Objective: To evaluate the prevalence of IgA and IgG antineutrophil cytoplasmic antibodies (ANCAs) in erythema elevatum diutinum in comparison with 2 other groups of neutrophilic dermatoses: Sweet syndrome and pyoderma gangrenosum.

Design: Detection of IgA and IgG ANCAs in the serum of patients with neutrophilic dermatoses and characterization of the previously known antigenic targets.

Setting: All serum was analyzed without knowledge of diagnosis in the Immunology Department, Pitié-Salpêtrière Hospital, Paris, France.

Additional conjunctival and penile pigmentation in Laugier-Hunziker syndrome: a report of two cases.

Background: Laugier-Hunziker syndrome is a rare acquired hyperpigmentation of the oral mucosa and lips which is often associated with longitudinal melanonychia. We report two patients exhibiting the classical features of Laugier-Hunziker syndrome with additional and previously unreported conjunctival and penile pigmentation.

Patients And Methods: Two patients presented with a history of progressive acquired macular pigmentation of the oral mucosa, the lips, the ocular conjunctiva and the penis.

Protein Z deficiency in antiphospholipid-negative Sneddon's syndrome.

Background: Sneddon's syndrome is characterized by the association of ischemic cerebrovascular events and widespread livedo racemosa. The pathophysiology of Sneddon's syndrome remains elusive, but various prothrombotic abnormalities have been previously reported in this setting. Low levels of protein Z, a downregulator of coagulation, have been recently linked to an increased risk of arterial thrombosis.

Familial Laugier-Hunziker syndrome.

We report the unusual occurrence of 3 cases of Laugier-Hunziker syndrome in the same family.

[Classification of dermatologic manifestations in lupus erythematosus].

Various dermatologic manifestations are observed in the different lupus subsets. Lupus lesions are characterized by a dermo-epidermal dermatitis. Other lesions, vascular or non vascular, are essentially present in association with systemic lupus erythematosus.

[How to recognize scleroderma].

Systemic sclerosis is a multisystem disorder characterized by the presence of connective tissue sclerosis, vascular abnormalities concerning small-sized arteries and the microcirculation, and autoimmune changes. This disease is usually preceded by Raynaud's phenomenon. Cutaneous changes are useful for diagnosis.