Tuesday, December 4, 2012

LYME AWAY

    
   Lyme disease is caused by bacteria called Borrelia burgdorferi ( B. burgdorferi). Blacklegged ticks carry these bacteria. The ticks pick up the bacteria when they bite mice or deer that are infected with Lyme disease. You can get the disease if you are bitten by an infected tick.   Lyme disease was first reported in the United States in the town of Old Lyme, Connecticut, in 1975. In the United States, most Lyme disease infections occur in the following areas:
Northeastern states, from Virginia to Maine
North-central states, mostly in Wisconsin and Minnesota, the West Coast, particularly northern California.
    There are 3 stages of Lyme disease. 
  • Stage 1 is called early localized Lyme disease. The infection is not yet widespread throughout the body.
  • Stage 2 is called early disseminated Lyme disease. The bacteria have begun to spread throughout the body.
  • Stage 3 is called late disseminated Lyme disease. The bacteria have spread throughout the body.
Risk factors for Lyme disease include:
  • Doing outside activities that increase tick exposure (for example, gardening, hunting, or hiking) in an area where Lyme disease is known to occur
  • Having a pet that may carry ticks home
  • Walking in high grasses
    Important facts about tick bites and Lyme disease:
  • In most cases, a tick must be attached to your body for 24 - 36 hours to spread the bacteria to your blood.
  • Blacklegged ticks can be so small that they are almost impossible to see. Many people with Lyme disease never even saw a tick on their body.
  • Most people who are bitten by a tick do not get Lyme disease.
Symptoms of early localized Lyme disease (Stage 1) begin days or weeks after infection. They are similar to the flu and may include:
  • Body-wide itching
  • Chills
  • Fever
  • General ill-feeling
  • Headache
  • Light-headedness or fainting
  • Muscle pain
  • Stiff neck
    There may be a "bull's eye" rash, a flat or slightly raised red spot at the site of the tick bite. Often there is a clear area in the center. It can be quite large and expanding in size.
    Symptoms may come and go. Untreated, Lyme disease can spread to the brain, heart, and joints.

    Symptoms of early disseminated Lyme disease (Stage 2) may occur weeks to months after the initial tick bite. They may include:
  • Paralysis or weakness in the muscles of the face
  • Muscle pain and pain or swelling in the knees and other large joints
  • Heart problems, such as skipped heartbeats (palpitations)
    Symptoms of late disseminated Lyme disease (Stage 3) can occur months or years after the initial infection. The most common symptoms are muscle and joint pain. Other symptoms may include:
  • Abnormal muscle movement
  • Muscle weakness
  • Numbness and tingling
  • Speech problems
    A blood test can be done to check for antibodies to the bacteria that cause Lyme disease. The most commonly used is the ELISA for Lyme disease test. A western blot test is done to confirm ELISA results.
   In areas where Lyme disease is more common, your health care provider may be able to diagnose early disseminated Lyme disease (Stage 1) without doing any lab tests.
    Other tests that may be done, when the infection has become more widespread, include:
  • Electrocardiogram
  • Echocardiogram to look at the heart
  • Spinal tap (lumbar puncture to examine spinal fluid
  • MRI of the brain
    Anyone who has been bitten by a tick should be watched closely for at least 30 days.
    A single dose of antibiotics may be offered to someone soon after being bitten by a tick, if all of the following are true:
  • The person has a tick that can carry Lyme disease attached to their body. This usually means that a nurse or physician has looked at and identified the tick.
  • The tick is thought to have been attached to the person for at least 36 hours.
  • The person can begin taking the antibiotics within 72 hours of removing the tick.
  • The person is over 8 years old and is not pregnant or breastfeeding.
   A 2 - 4-week course of antibiotics is used to treat people who are diagnosed with Lyme disease. The specific antibiotic used depends on the stage of the disease and the symptoms.
    Pain medications, such as ibuprofen, are sometimes prescribed to relieve joint stiffness.

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