dermatologic disorders
Erythema Multiforme
Diagnosis of Erythema Multiforme
Clinical evaluation Diagnosis of erythema multiforme is by clinical appearance; biopsy is rarely necessary. Differential diagnosis includes Urticaria , Oral lesions must be distinguished from Recurrent Aphthous Stomatitis , Patients with widely disseminated purpuric macules and blisters and prominent involvement of the trunk and face are likely to have Stevens-Johnson Syndrome (SJS) and Toxic Epidermal Necrolysis (TEN) rather than erythema multiforme. 