What should you know about pemphigus vulgaris clinical features?

The immune system attacks proteins that hold neighboring skin cells together. As a result, blisters form within the skin and break easily, leaving tender erosions. Mouth sores may affect the gums, inner cheeks, palate, or throat and can make chewing or swallowing uncomfortable. Skin lesions may occur on the chest, back, scalp, face, or other areas and can extend when the condition is active.

The appearance alone cannot confirm pemphigus vulgaris. A dermatologist may use a skin biopsy from the edge of a fresh lesion and additional testing to distinguish it from infections, medication reactions, or other blistering diseases.

Arrange a dermatology assessment for persistent blisters or unexplained erosions. Photograph changes for your appointment, avoid picking at crusts, and protect open areas with non-stick dressings. Gentle oral hygiene and soft, cool foods may reduce irritation when the mouth is sore.

Treatment aims to stop new lesions, heal existing erosions, and limit medicine-related harm. Options can include [Oral Corticosteroid Treatment](/treatments/medical-dermatology/oral-corticosteroid-therapy/) and selected immune-targeting medicines such as [Biologic Therapy](/treatments/medical-dermatology/biologic-therapy/).

Get urgent help if you cannot drink, swallowing or breathing is difficult, skin loss is extensive, or weakness and dizziness suggest dehydration. New fever, pus, foul odor, spreading redness, or sharply increasing pain needs prompt review because open erosions can become infected.

Ask which biopsy or blood tests are appropriate, whether the mouth or skin is more active, how to protect erosions, and how you will monitor treatment. Clarify which symptoms require urgent contact between visits.