We present a 58-year-old Jamaican man with an eight-month history of an isolated, vegetative, eroded, and crusted plaque on the posterior aspect of the scalp. One month prior to referral to the Charles C. Harris Skin and Cancer Pavilion he…
We present a 58-year-old Jamaican man with an eight-month history of an isolated, vegetative, eroded, and crusted plaque on the posterior aspect of the scalp. One month prior to referral to the Charles C. Harris Skin and Cancer Pavilion he…
Bullous pemphigoid is an autoimmune blistering skin disease characterized by the presence of circulating autoantibodies which recognize specific proteins of the epidermis and dermoepidermal junction. Diagnosis is based on clinical criteria and laboratory investigations, notably histology, direct and indirect immunofluorescence,…
There are a limited number of reports indicating the role of human leukocyte antigen (HLA) class I alleles in pemphigus vulgaris. This study was designed to highlight the association of HLA class I alleles with pemphigus vulgaris in Iran. Fifty…
Pemphigus foliaceus (pem-fi-gus foli-a-shus) is an auto immune disease that affects humans and dogs and, to a lesser extent, cats and horses. In horses, it is characterized by primary lesions that often begin on the head and lower extremities; secondary…
Senear-Usher syndrome or pemphigus erythematosus is a pathology that overlaps clinically and serologically with pemphigus foliaceus and lupus erythematosus. Skin biopsies of patients with pemphigus erythematosus reveal acantholysis and deposits of immunoglobulins in desmosomes, and they are positive in the…
Human epidermis shows a non-neuronal cholinergic system including keratinocyte (kc) acetylcholine (Ach) axis which is composed by enzymes and two families of Ach receptors (muscarinic and nicotinic receptors). The activity of these two receptors can regulate the interkeratinocytes and kcs-extracellular…
Although bacterial pyoderma is among the most commonly encountered dermatologic conditions in dogs, some cases present diagnostic challenges even to experienced clinicians. This article presents several unusual manifestations of pyoderma, including bullous impetigo, superficial spreading pyoderma, mucocutaneous pyoderma, and post-grooming…
Pemphigus vulgaris (PV) is an autoimmune mucocutaneous disease presenting clinically with blisters or erosions of the skin and mucous membrane. The main histopathologic characteristic of this disease is suprabasal vesicles due to loss of cell–cell adhesion between keratinocytes named acantholysis.…