Diseases & Conditions


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Human Monocytic Ehrlichiosis (HME)


Synonyms of Human Monocytic Ehrlichiosis (HME)
  • Human Ehrlichial Infection, Human Monocytic Type

Disorder Subdivisions



    General Discussion
    Human Monocytic Ehrlichiosis (HME) is a rare infectious disease belonging to a group of diseases known as the Human Ehrlichioses. These diseases are caused by bacteria belonging to the Ehrlichia family. Several forms of Human Ehrlichioses have been identified, including Human Monocytic Ehrlichiosis, Sennetsu Fever, and Human Granulocytic Ehrlichiosis. Though caused by different strains of Ehrlichia bacteria, the disorders are characterized by similar symptoms.

    The symptoms of Human Monocytic Ehrlichiosis may include a sudden high fever, headache, muscle aches (myalgia), chills, and a general feeling of weakness and fatigue (malaise) within a few weeks after initial infection. In addition, in many cases, laboratory findings may indicate an abnormally low number of circulating blood platelets (thrombocytopenia), a decrease in white blood cells (leukopenia), and an abnormal increase in the level of certain liver enzymes (hepatic transaminases). In some individuals, symptoms may progress to include nausea, vomiting, diarrhea, weight loss, and/or confusion. If HME is left untreated, life-threatening symptoms, such as kidney failure and respiratory insufficiency, may develop in some cases. Human Monocytic Ehrlichiosis is caused by the bacteria Ehrlichia chaffeensis (or E. chaffeensis). E. chaffeensis is carried and transmitted by certain ticks (vectors), such as the Lone Star tick (Amblyomma americanum) and the American dog tick (Dermacentor variabilis).

    Organizations related to Human Monocytic Ehrlichiosis (HME)
    • Centers for Disease Control and Prevention
      1600 Clifton Road NE
      Atlanta GA 30333
      Phone #: 404-639-3534
      800 #: 800-311-3435
      e-mail: http://www.cdc.gov/netinfo.htm
      Home page: http://www.cdc.gov/
    • Lyme Disease Foundation
      P.O. Box 332
      Tolland CT 06084
      Phone #: 860-525-2000
      800 #: 800-886-5963
      e-mail: lymefnd@aol.com
      Home page: http://www.lyme.org
    • NIH/National Institute of Allergy and Infectious Diseases
      6610 Rockledge Drive
      Bethesda MD 20892-6612
      Phone #: 301-496-5717
      800 #: --
      e-mail: N/A
      Home page: http://www.niaid.nih.gov/
    • World Health Organization (WHO) Regional Office for the Americas (AMRO)
      Pan American Health Organization (PAHO)
      Washington DC 20037
      Phone #: 202-974-3000
      800 #: --
      e-mail: postmaster@paho.org
      Home page: http://www.who.ch/



    For a Complete Report

    This is an abstract of a report from the National Organization for Rare Disorders, Inc. ? (NORD). A copy of the complete report can be obtained for a small fee by visiting the NORD website. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational treatments (if available), and references from medical literature. For a full-text version of this topic, see http://www.rarediseases.org/search/rdblist.html