clinical features

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Clinical features occur after an incubation period of 2 to 10 days, and are as follows:

  • presenting features are fever, headache, rigors
  • may progress to develop jaundice and hepatosplenomegaly
  • petichial rash may occur
  • crises with tachycardia and fevers occur
  • after the crises the patient becomes hypotensive.
  • the condition may relapse but crises are less severe than at onset
  • ultimately it may be fatal

The louse-borne, epidemic form has a longer incubation period, longer periods of fever but fewer relapses.

Last reviewed 01/2018