Diagnosis: Pemphigus vulgaris
A 52-year-old female presents with painful oral erosions and flaccid skin bullae that have progressively worsened over the past month. Examination reveals extensive mucosal involvement and positive Nikolsky sign, raising suspicion for an autoimmune blistering disorder.
A 52-year-old female presents with a one-month history of painful oral erosions and flaccid skin bullae. On examination, multiple bullae are noted on the trunk and extremities, with significant mucosal involvement, particularly in the oral cavity. The skin is tender, and a positive Nikolsky sign is observed, indicating fragility of the epidermis.Age: 52 yearsSex: FemaleDuration: 1 monthKey complaint: Painful oral erosionsExam findings: Flaccid bullae, positive Nikolsky sign
The patient reports that the oral lesions began as small painful ulcers that progressively coalesced into larger erosions. She denies any known triggers or recent illnesses. She has no significant past medical history and no family history of autoimmune diseases. The patient has not undergone any treatments prior to presentation.Onset: Progressive over 1 monthTriggers: None identifiedPrior treatments: NonePast medical history: UnremarkableFamily history: No autoimmune diseasesSocial history: Non-smoker, no recent travel
Acute / First-Line ManagementStart prednisone at 1 mg/kg/day with a gradual taper based on clinical response.Consider adding mycophenolate mofetil at 1-3 g/day for steroid-sparing effects.Provide supportive care including oral rinses with topical anesthetics for symptomatic relief.Workup and Diagnostic ConfirmationPerform skin biopsy for histopathological examination and direct immunofluorescence to confirm diagnosis.Order serologic tests for anti-desmoglein antibodies (IgG) to support diagnosis.Long-Term ManagementContinue maintenance therapy with azathioprine or mycophenolate mofetil to prevent relapse.Monitor for potential side effects of immunosuppressive therapy, including infections.Regular follow-up to assess disease activity and adjust therapy as needed.
Bullous Pemphigoid: Typically presents with tense bullae and is more common in older patients; direct immunofluorescence shows linear IgG and C3 along the basement membrane.Herpes Simplex Virus (HSV) Infection: Often presents with grouped vesicles and ulcerations; PCR or viral culture can confirm diagnosis.Staphylococcal Scalded Skin Syndrome: Primarily affects children and presents with widespread erythema and sloughing of the skin; caused by staphylococcal toxins.Contact Dermatitis: May present with vesicles and erosions in exposed areas; history of allergen exposure helps differentiate.Dermatitis Herpetiformis: Associated with gluten sensitivity; presents with pruritic vesicles and papules, typically on extensor surfaces; direct immunofluorescence shows granular IgA deposits.Fixed Drug Eruption: Characterized by recurrent lesions at the same site after drug exposure; resolves upon drug withdrawal.Linear IgA Bullous Dermatosis: Presents with vesicles and bullae, often in children; direct immunofluorescence shows linear IgA deposits along the basement membrane.
High-Yield PearlsNikolsky Sign: A positive Nikolsky sign is a hallmark of blistering disorders, indicating epidermal fragility.Diagnosis Confirmation: Direct immunofluorescence microscopy is crucial for distinguishing pemphigus vulgaris from other blistering diseases.Autoantibodies: Detection of anti-desmoglein antibodies is integral to the diagnosis and monitoring of disease activity.Systemic Therapy: Corticosteroids are the mainstay of treatment, often requiring adjunct immunosuppressants for long-term management.Complications: Patients are at increased risk for infections due to skin barrier disruption; prompt management is essential.Early recognition and treatment of pemphigus vulgaris can significantly improve patient outcomes and quality of life.
Tags: pemphigus, vulgaris, autoimmune blistering