Oral-Sparing Viral Rash: Diagnosis and Management

Differential Diagnosis

• Varicella typically involves oral mucosa but may present with predominantly cutaneous lesions 1
• Enteroviral infections, such as coxsackievirus and echovirus, can cause various rash patterns 2

Special Considerations

• If the patient presents with dermatomal distribution of lesions, consider herpes zoster, which requires immediate antiviral therapy even in the absence of vesicles 3, 4
• Treatment must be initiated within 72 hours of symptom onset for optimal efficacy 3, 4
• Oral antiviral therapy with acyclovir 800 mg five times daily, valacyclovir 1000 mg three times daily, or famciclovir 500 mg three times daily for 7-10 days is recommended for herpes zoster 3, 4