Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis

Key Points

• SJS/TEN is a rare, abrupt, high-acuity skin-loss syndrome that can involve mucous membranes and multiple organ systems.
• Most cases are medication-associated, so immediate withdrawal of the suspected trigger is a priority action.
• Early presentation often starts with fever and malaise before painful blistering erosions develop.
• Care frequently follows burn-unit principles: airway surveillance, infection prevention, fluid/temperature support, and intensive wound care.
• TEN generally presents with more widespread erosive involvement than SJS.

Pathophysiology

SJS/TEN is a severe cutaneous adverse-reaction spectrum marked by widespread keratinocyte injury and epidermal detachment. The exact mechanism is not fully defined, but leading models describe medication-triggered T-cell-mediated cytotoxic injury.

Proposed pathways include major-histocompatibility-complex-related activation with granulysin and CD8-positive cytotoxic-cell effects, culminating in keratinocyte death, blistering, and sloughing. Clinical surface injury can resemble partial-thickness burn patterns, and management is often aligned with burn-center workflows.

Classification

• Stevens-Johnson syndrome (SJS): More localized blistering and epidermal-loss pattern.
• Toxic epidermal necrolysis (TEN): More widespread painful blister-like erosions with higher global instability risk.
• Common trigger pattern: Frequently medication-associated (for example selected cephalosporins, allopurinol, and phenytoin-class exposures).

Nursing Assessment

NCLEX Focus

In suspected SJS/TEN, stop new-suspect medication pathways rapidly and prioritize airway plus hemodynamic stability before detailed wound tasks.

• Obtain focused onset history and full recent-medication timeline, emphasizing newly started drugs.
• Assess prodromal symptoms (fever, malaise, upper-respiratory complaints) and progression to painful target-like blistering erosions.
• Examine mucosal surfaces (oral, lip, and other mucosal sites) in addition to skin and high-friction zones.
• Trend vital signs, pain burden, hydration status, urine output, and temperature stability.
• Monitor for respiratory compromise and escalate airway concerns immediately.
• Review ordered diagnostics, which may include CBC/CMP, renal-hepatic panels, and additional testing (for example skin biopsy, chest imaging, ECG, bronchoscopy context).
• Monitor laboratory instability patterns (for example anemia, neutropenia, transaminase elevation, hyponatremia) and correlate with organ-system symptoms.
• Screen for infection progression and multisystem dysfunction signs, including sepsis-risk deterioration.

Nursing Interventions

• Stop the suspected causative medication immediately and notify the prescribing team.
• Prioritize ABCDE stabilization and treat airway involvement as highest-acuity threat.
• Provide ordered skin care using gentle cleansing, selective necrotic-tissue removal, and nonadherent dressings.
• Use strict aseptic technique for wound handling and dressing changes.
• Reassess pain frequently and administer analgesia before painful care activities.
• Collect wound cultures as ordered when infection is suspected and escalate abnormal findings rapidly.
• Administer ordered antimicrobials only when infection is confirmed or strongly suspected.
• Support volume status, oxygenation, nutrition, and thermoregulation according to acuity and protocol.
• Coordinate multispecialty care (critical care, dermatology, respiratory, surgical, rehabilitation, and psychosocial services).
• Plan transition care early, including rehabilitation needs, follow-up coordination, and mental-health support for stress/PTSD burden.

Culprit-Drug Delay

Delayed discontinuation of the suspected trigger medication can accelerate epidermal-loss progression and multisystem instability.

Pharmacology

Drug Class	Examples	Key Nursing Considerations
High-risk trigger medications	cephalosporins, allopurinol, phenytoin	Stop suspected trigger immediately and document precise onset-exposure timeline.
analgesics	Opioid and nonopioid regimens	Premedicate for wound care when ordered and reassess pain trajectory frequently.
antibiotics	Culture-guided systemic agents	Use for secondary infection management; avoid reflex empiric overuse without clinical indication.

Clinical Judgment Application

Clinical Scenario

A patient develops fever and malaise 3 days after starting a new medication, followed by painful target-like blistering rash with oral mucosal erosions.

• Recognize Cues: New medication exposure, prodrome, mucocutaneous blistering, and rising pain burden.
• Analyze Cues: Pattern is concerning for severe medication-related epidermal-loss syndrome rather than a minor drug rash.
• Prioritize Hypotheses: SJS/TEN with airway-fluid-infection risk is the immediate threat.
• Generate Solutions: Stop suspected trigger, initiate burn-style wound protocol, and activate interdisciplinary escalation.
• Take Action: Implement airway and hemodynamic monitoring, nonadherent dressing care, and ordered supportive therapies.
• Evaluate Outcomes: Skin-loss progression stabilizes, pain becomes tolerable, and labs/volume status trend toward recovery.

Related Concepts

• burn-injury-assessment-resuscitation-and-complications - Skin-loss severity framework and burn-center style stabilization priorities.
• staphylococcal-scalded-skin-syndrome - Key differential when widespread exfoliative skin findings are present.
• wound-culture-specimen-collection - Infection-focused specimen workflow when lesion infection is suspected.
• simple-wound-dressing-change - Foundational sterile handling and reassessment workflow for daily wound care.
• sepsis - High-risk systemic complication pathway requiring early recognition.

Self-Check

1. What immediate action should occur when SJS/TEN is suspected after a new medication start?
2. Why are nonadherent dressings and airway surveillance both priorities in SJS/TEN?
3. Which findings distinguish worsening systemic involvement from isolated skin symptoms?