Ethambutol-induced toxic epidermal necrolysis

Area of Science:

• Dermatology
• Pharmacology
• Pathology

Background:

• Toxic epidermal necrolysis (TEN) is a severe cutaneous adverse drug reaction.
• TEN shares clinical similarities with other bullous dermatoses like Stevens-Johnson syndrome (SJS) and staphylococcal scalded skin syndrome (SSSS).
• Accurate differentiation is crucial for appropriate patient management.

Observation:

• This report describes the first documented case of TEN associated with ethambutol hydrochloride.
• The patient presented with clinical signs suggestive of a severe cutaneous reaction.
• Differential diagnosis considered SSSS and SJS based on clinical presentation.

Findings:

• Histopathological examination confirmed TEN.
• The adverse reaction was attributed to ethambutol hydrochloride administration.
• This finding expands the known spectrum of drugs implicated in TEN.

Implications:

• Clinicians should consider ethambutol hydrochloride as a potential cause of TEN.
• Awareness of this association can improve diagnostic accuracy for TEN.
• Further research may elucidate the specific mechanisms linking ethambutol to TEN.