BACKGROUND Multinucleated giant cells in the epidermis can either be epithelial or histiocytic. Epithelial multinucleated giant cells are most often associated with herpes virus infections. PURPOSE To review the histologic differential diagnosis of conditions with epithelial and histiocytic multinucleated giant cells-since multinucleated giant cells in the epidermis are not always pathognomon...

Sweet syndrome (SS) (Acute Febrile Neutrophilic Dermatosis) has been reported in association with autoimmune phenomena including relapsing polychondritis, drug-induced lupus, and the development of antineutrophil cytoplasmic antibodies (ANCAs). However, a combination of these autoimmune features has not been reported. Herein, we report a case of drug-induced bullous SS with ocular and mucosal i...

Pseudoporphyria is a rare bullous dermatosis that clinically and histopathologically is similar to porphyria cutanea tarda. It mainly affects patients with chronic renal failure on peritoneal dialysis or hemodialysis. Medications can also be involved in the etiology. Diagnosis and management of this condition is a challenge for dermatologists. The authors report a case of pseudoporphyria relate...

A 2-month-old female infant was referred to DebRA Mexico from the Regional Children's Hospital because of a generalized dermatosis from birth characterized by multiple blisters and erosions on the trunk, face and limbs, associated with minor trauma. A skin biopsy showing subepidermal blisters associated with a dermal infiltrate of Giemsa-positive cells and CD117-positive antibody was consistent...

Linear IgA bullous dermatosis (LAD) is an autoimmune subepidermal blistering disorder. LAD may be either idiopathic or drug related; the most common drug being vancomycin. The clinical presentations of both idiopathic and drug-related LAD are variable and may mimic other blistering disorders. We report a case of a 76-year-old man known to have a renal cell carcinoma who presented a vancomycin-i...

Subcorneal pustular dermatosis (SPD), is rare, chronic, and relapsing pustuler eruption. Mostly, it affects middle-aged elderly women. Mucosal involvement extremely rare. Here we report a 31-year-old woman with generalized SPD lip involvement. The patient had annular or serpiginous patterned well-demarcated plaques on the trunk, intertriginous areas flexor aspects of limbs, palmoplantar areas, ...

Pseudoporphyria is a rare bullous dermatosis that clinically and histopathologically is similar to porphyria cutanea tarda. It mainly affects patients with chronic renal failure on peritoneal dialysis or hemodialysis. Medications can also be involved in the etiology. Diagnosis and management of this condition is a challenge for dermatologists. The authors report a case of pseudoporphyria relate...

Parpose: Direct immunofluorescence (DIF) study on the conjunctiva is currently the classical diagnostic tool used fo the. diagnosis of autoimmune cicatrizing conjunctivitis, which is characterized by the deposition of immunoglobuliis and/or compleme:nt along the conjunctival basement membrane zone (BMZ). To diagnose the type of autoimmune conjunctivitis, we performed d&t immunoeleclron microsco...

Parpose: Direct immunofluorescence (DIF) study on the conjunctiva is currently the classical diagnostic tool used fo the. diagnosis of autoimmune cicatrizing conjunctivitis, which is characterized by the deposition of immunoglobuliis and/or compleme:nt along the conjunctival basement membrane zone (BMZ). To diagnose the type of autoimmune conjunctivitis, we performed d&t immunoeleclron microsco...