Lyme Disease

Lyme disease is a bacterial infection transmitted by a tick.

The ticks most commonly infected with B. burgdorferi usually feed and mate on deer during part of their life cycle. Lyme disease has been reported in nearly all states in this country, although most cases are concentrated in the coastal northeast, Mid-Atlantic States, Wisconsin, and Minnesota, and northern California.

Lyme disease is transmitted through a bite from a specific type of tick. The animals that most often carry these insects are white-footed field mice, deer, raccoons, opossums, skunks, weasels, foxes, shrews, moles, chipmunks, squirrels, and horses. The majority of these ticks have been found in New York, Connecticut, Massachusetts, Maryland, New Jersey, Minnesota, and Wisconsin.

In the early stages of Lyme disease, you may experience flu-like symptoms that can include a stiff neck, chills, fever, swollen lymph nodes, headaches, fatigue, muscle aches, and joint pain. You also may experience a large, expanding skin rash around the area of the tick bite. In more advanced disease, nerve problems, heart problems and arthritis, especially in the knees, may occur.

Lyme disease imitates a variety of illnesses and its severity can vary from person to person. If you have been bitten by a tick and live in an area known to have Lyme disease, see your doctor right away so that a proper diagnose can be made and treatment started.

Lyme disease may be difficult to diagnose because many of its symptoms mimic those of other disorders. Although a tick bite is an important clue for diagnosis, many patients cannot recall having been bitten by a tick.

The easiest way for a doctor to diagnose Lyme disease is to see the unique bull’s-eye rash. If there is no visible rash (as is the case in about one-fourth of those infected), the doctor might order a blood test three to four weeks after the onset of the suspected infection to look for antibodies against the bacteria.

The presence of antibodies, however, does not prove that the bacterium is the cause of a patient’s symptoms. The presence of specific antibodies suggests a prior infection, which may or may not still be active.

In its early stages, Lyme disease can be effectively treated with antibiotics. In general, the sooner such therapy is begun following infection, the quicker and more complete the recovery. Antibiotics, such as doxycycline or amoxicillin taken orally for two to four weeks, can speed the healing of the rash and can usually prevent subsequent symptoms such as arthritis or neurological problems. There is no compelling evidence that prolonged antibiotic therapy is more effective than two weeks of therapy.

Following treatment for Lyme disease, some people still have persistent fatigue and achiness. This general malaise can take months to slowly disappear, although it generally does so spontaneously without the use of additional antibiotic therapy. There is no evidence that the Borrelia infection causes chronic fatigue syndrome or fibromyalgia. Although some patients with Lyme disease may develop these problems, as with other patients who get chronic fatigue or fibromyalgia, long-term antibiotics will not hasten recovery.