Pemphigus vulgaris

Pemphigus vulgaris is a rare autoimmune disease that affects the skin and mucous membranes. It causes painful blisters and erosions, primarily in the mouth and on the skin, which can make eating and daily activities difficult. The condition occurs when the body's immune system mistakenly attacks proteins that hold skin cells together, leading to skin layers separating and blister formation. This disease mainly involves the skin's outer layer and mucous membranes, causing discomfort and risk of infection. Without treatment, these blisters can spread and become severe, impacting overall health. The disease requires medical diagnosis and management to control symptoms and prevent complications.

Pemphigus vulgaris is an autoimmune blistering disorder characterized by the production of autoantibodies against desmoglein 3 and sometimes desmoglein 1, which are critical components of desmosomes that maintain keratinocyte adhesion in the epidermis. This leads to acantholysis, or loss of cell-to-cell adhesion, resulting in intraepidermal blister formation. The disease primarily affects the mucous membranes and skin, presenting with painful erosions and flaccid blisters that rupture easily. It is caused by a type II hypersensitivity reaction mediated by IgG autoantibodies. Clinically, it is significant due to its potential for extensive skin involvement and secondary infections, which can be life-threatening if untreated. Diagnosis and early treatment are essential to reduce morbidity and mortality.