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Meningococcal meningitis, neck and back extension, and hip flexion in an infant

(Source: Smith JL. Cerebro-spinal fever. In: Keating JM, editor. Cyclopaedia of the diseases of children: medical and surgical: the articles written especially for the work by American, British, and Canadian authors. Vol. 1. Philadelphia: JB Lippincott Company, 1889:514-54. Image edited and restored by Dr. Douglas J Lanska.)

Associated Disorders

  • asplenia
  • deficiency of a terminal complement component (C5-9)
  • deficiency of properdin