ABSTRACT: Erythema multiforme (EM) is a mucocutaneous disorder that presents clinically as vesiculobullous and ulcerative lesions affecting any part of oral cavity when occurring alone in oral cavity. It can commonly be seen on skin too with typical target like lesions. We present a case of EM in a 9 year old girl who complained of recurring lesions on lip. Based on history, clinical presentation and serological investigations, it was diagnosed as herpes associated Erythema multiforme (HAEM). This case was very well managed with systemic steroids and it highlights the advantage of gentian violet for mucocutaenous lesions and also immunomodulator as maintenance therapy.