“…1,2,9-12 Systemic causes usually result from bleeding disorders and include: haemophilia, von Willebrand's disease, heparin treatment, thrombolytic treatment and liver disease. [13][14][15][16] Other systemic causes described are anaemia, leukaemia, sickle cell disease, and hypertension. 2,3 Meningococcal infection is caused by the organism, Neisseria meningitidis, a gram negative diplococcus.…”