Multinucleate cell angiohistiocytoma: a rare and challenging diagnosis
A hidden honeycomb: onychomatricoma
Herpes simplex lymphadenitis in an immunocompetent patient: diagnostic pitfalls on cytology and review of literature
Introduction Herpes simplex virus (HSV) infection commonly involves skin, mucous membranes, eye, and central nervous system. Out of the two serologic types of HSV, HSV2 is more commonly associated with genital herpes. Lymphadenitis is a rare complication of HSV and can occur as a part of a systemic HSV involvement or associated with skin rash.1 […]
Dermoscopy as a significant tool for diagnosing an exuberant case of human immunodeficiency virus-associated pityriasis lichenoides et varioliformis acuta
Introduction Pityriasis lichenoides et varioliformis acuta (PLEVA) is a rare dermatological condition of uncertain etiology, predominantly affecting young adults. Proposed triggers include medication use, vaccinations, and inflammatory responses to infectious agents, notably the human immunodeficiency virus (HIV).1 Clinically, PLEVA manifests as the sudden onset of multiple erythematous macules that progress into pustules or vesicles containing […]
Achenbach syndrome: a benign cause of blue finger illustrated by a case report
Introduction Achenbach syndrome, first described in 1958 by Walter Achenbach, is a benign and self-limited vascular condition characterized by sudden-onset subcutaneous bleeding of the fingers, most frequently affecting middle-aged women.1 Although its exact pathophysiology remains unclear, proposed mechanisms include capillary fragility, microhemorrhages, vasomotor instability, and a possible genetic predisposition.2,3 Despite its harmless course, its abrupt […]
Linear immunoglobulin A bullous dermatosis in childhood with an atypical granular pattern: importance of early differential diagnosis
Introduction Linear immunoglobulin A bullous dermatosis (LABD) is a rare autoimmune subepidermal blistering disorder characterized by linear immunoglobulin (Ig)A deposition along the basement membrane zone (BMZ).1 It affects both adults and children, being more frequent in the latter, typically between 4 and 5 years of age.2 In pediatric cases, it is also termed chronic bullous […]
Vancomycin-induced drug rash with eosinophilia and systemic symptoms syndrome: a case report
Introduction Adverse drug reactions affecting the skin are common and present with a diverse pattern of expressions. Cutaneous hypersensitivity reactions range in severity, from mild reactions to severe cutaneous adverse reactions (SCARs).1 To be included in SCAR, the following criteria are to be fulfilled: (1) severe (associated to a significant morbidity and mortality and usually […]
Jigsaw puzzle flap for the simultaneous closure of two surgical defects
Complication following treatment with a microneedling technique for a female pattern hair loss: hair dye-induced tattoo-like pigmentation
Introduction MMP®, an acronym for microinfusion of drugs into the skin, is an innovative technique developed in Brazil that consists of microneedling performed with professional tattoo devices for the transdermal delivery of pharmacological agents.1 It has been applied as an adjuvant treatment for androgenetic alopecia, particularly in cases of female pattern hair loss.2,3 The method […]
Apocrine hidrocystoma of the breast: a case report of unusual clinical and dermoscopic findings
A 33-year-old woman presented with a 6-month history of a gradually increasing papule on her right breast. A 17 mm red-violet, asymptomatic, relatively indurated dome-shaped nodule was identified (Fig. 1A). Dermoscopic examination (Fig. 1B) revealed a central homogeneous bluish-gray area with a few short linear-irregular vessels, an erythematous area with shiny whitish structures and a […]