title: [Purpura fulminans associated with a C7 deficiency].
abstract: A patient suffering from purpura fulminans was found to have a hereditary deficiency of the C7 component of complement. The homozygous deficiency of late acting complement components increases the risk of neisserial infection. CH50 titration will detect those patients suffering from a homozygous deficiency, who should be vaccinated against Neisseria meningitidis types.
mesh_terms: D000293:Adolescent; D003184:Complement C7 / Q000172:deficiency* / Q000235:genetics; D005260:Female; D006720:Homozygote; D006801:Humans; D008589:Meningococcal Infections / Q000150:complications*; D011693:Purpura / Q000209:etiology*
chemical_list: D003184:Complement C7
vernacular_title: Purpura fulminans associé à un déficit en C7.