01/26/2016
• Lyme disease;
:: Causes
Lyme disease is caused by the bacterium Borrelia (B.) burgdorferi, which is transmitted through the bite of a deer tick. Both nymph and adult ticks can transmit B. burgdorferi.
:: Risk Factors
Anyone exposed to deer ticks is at risk for Lyme disease. Deer ticks thrive in grassy areas that have low sunlight and high humidity.
Nymph ticks are more active during the summer months. Their small size makes them harder to spot than adult ticks. Consequently, the risk for acquiring Lyme disease tends to be higher during the summer. Risk is lowest in the winter when ticks become inactive.
:: Prevention
Avoid tick-infested areas such as tall grass, woods, and bushes.
Wear long pants and long sleeves when you walk through these areas.
Wear light-colored clothes to make spotting ticks easier.
Use a tick repellent on your exposed skin and clothes, such as DEET or picaridin. Spray your clothes and not your skin if you are using permethrin.
Check for ticks when you return home. Removing infected ticks within 48 hours of attachment significantly reduces the risk of developing Lyme disease.
:: Symptoms
A bull's-eye rash (erythema migrans) is the most definitive sign of Lyme disease infection. This rash usually develops 1 - 2 weeks after a tick bite.
Other symptoms may accompany the rash, such as joint pain, fever, chills, or fatigue.
If Lyme disease is not treated, more severe symptoms and complications can occur. These include arthritis, neurologic symptoms, or heart problems.