Overview
Definition
Acute self-limiting hypersensitivity reaction.
Epidemiology
Varies globally depending on genetics, environment, or exposure.
Etiology & Risk Factors
- HSV infection (most common), Mycoplasma, Medications.
Clinical Symptoms
- Targetoid (bullseye) lesions on extremities
- typically starts on hands/feet.
Clinical Approach
Diagnosis
- Clinical diagnosis.
Management
- Treat underlying cause (e.g.
- Acyclovir for HSV)
- symptomatic relief.
Complications
- Usually resolves without complications.