By Pat Anson, PNN Editor
At long last, scientists are close to developing a new test to detect Lyme disease weeks sooner than current tests -- allowing patients to begin treatment earlier.
Lyme disease is a bacterial illness spread by ticks. Left untreated, it can lead to chronic conditions such as joint and back pain, chronic fatigue, fibromyalgia and neuropathy.
Borrelia burgdorferi was first identified as the bacteria that causes Lyme disease in 1983. The antibody tests currently used to detect Borrelia were developed a decade later and have a number of shortcomings. They can take up to three weeks to get results and cannot distinguish between an active infection or an old one.
A team of scientists recently reported in the journal Clinical Infectious Diseases that advances in molecular diagnostics should make a new DNA test for Borrelia technically feasible.
“These direct tests are needed because you can get Lyme disease more than once, features are often non-diagnostic and the current standard FDA-approved tests cannot distinguish an active, ongoing infection from a past cured one,” said lead author Steven Schutzer, MD, a physician-scientist at Rutgers New Jersey Medical School.
“The problem is worsening because Lyme disease has increased in numbers to 300,000 per year in the United States and is spreading across the country and world.”
Early symptoms of Lyme disease include fever, chills, headaches, fatigue, muscle and joint aches, and swollen lymph nodes. A delayed rash often appears at the site of the tick bite, which resembles a ring or bulls-eye. When there is no rash, a reliable laboratory test is needed to detect an active disease.
“The new tests that directly detect the Lyme agent’s DNA are more exact and are not susceptible to the same false-positive results and uncertainties associated with current FDA-approved indirect tests,” said Schutzer.
Lyme disease is usually treated with antibiotics, but some patients experience complications that lead to Lyme disease syndrome (PTLDS), with long-term symptoms such as fatigue, muscle and joint pain and cognitive issues. Autoimmune diseases have also been associated with chronic Lyme disease.