Lyon, Valerie B Necrotic facial papules in an adolescent: C2 deficiency with eventual development of lupus erythematosus. [electronic resource] - Pediatric dermatology - 318-22 p. digital Publication Type: Case Reports; Journal Article ISSN: 0736-8046 Standard No.: 10.1046/j.1525-1470.2003.20409.x doi Subjects--Topical Terms: AdolescentComplement C2--deficiencyFacial Dermatoses--etiologyFemaleHumansLupus Erythematosus, Cutaneous--diagnosisNecrosisVasculitis--etiology