SJS/TEN Teaching Pearls:
- SJS/TEN are severe mucocutaneous lesions
- <10% of epidermal involvement categorized as SJS.
- >30% of epidermal involvement categorized as TEN
- 10-30% of epidermal involvement categorized as SJS/TEN
- Most commonly caused by:
- Medications (allopurinol, anticonvulsants, sulfonamides, NSAIDS)
- Infectious (mycoplasma pneumonia, CMV)
- Clinical Manifestations:
- Prodrome of fever and flu-like symptoms 1-3 days
- Development of mucocutaneous and skin lesions that start as erythematous macules.
- Progress to vesicles and bullae formation within days prior to sloughing.
- Mucocutaneous involvement occurs in >90% of patients (oral, ocular, urogenital).
- Complications
- Fluid balance and electrolyte abnormalities
- Infections
- Staph Aureus and Pseudomonas
- Fungemia
- No role for empiric antibiotics.
- Pulmonary
- ARDS
- Pneumonia
- Management
- High level of suspicion as early withdrawal of medications important for treatment.
- Symptomatic care
- Consult ophtho, burn, and derm
- Patient should be transferred to ICU burn care if moderate to high severity of disease.
Dinstiguishing Features | DRESS | SJS/TEN |
Rash Morphology |
Erythroderma, swelling, maculopapular rash
|
Vesicle/bullae formation followed by sloughing |
Localization |
Diffuse, usually involves the face.
|
Diffuse; often spares the palms/soles, and scalp |
Timing |
Occurs 2-8 weeks after medication intake
|
Occurs 3-21 days after medication intake |
Internal Organ Involvement |
Lymphadenopathy, renal (AIN), hepatitis
|
Due to result of complication from SJS/TEN |
Systemic signs | Fever, malaise, fatigue
|
Fever, malaise, odynophagia |
Lab Findings |
Eosinophilia
|
Lymphopenia, rarely eosinophilia |