Lyme disease is one of the most well-known tick-borne infections in the United States. Caused by bacteria in the Borrelia family and most commonly transmitted through the bite of an infected blacklegged tick, Lyme disease can affect people in different ways. While some people develop noticeable symptoms soon after infection, others may experience symptoms that are less obvious or that change over time.
Understanding the basics of Lyme disease can help you recognize potential warning signs and know when it may be worth talking with a healthcare professional.
What Causes Lyme Disease?
Lyme disease is caused by Borrelia bacteria. In the United States, Borrelia burgdorferi is the primary species associated with Lyme disease, while Borrelia mayonii has also been identified in parts of the country.
Infected ticks acquire the bacteria when they feed on infected animals and can subsequently transmit the bacteria to people through a bite.
Not every tick carries Lyme disease, and a tick bite does not necessarily result in infection. However, recognizing potential exposure can be an important part of understanding symptoms that develop afterward.
What Are the Symptoms of Lyme Disease?
Lyme disease symptoms can vary depending on the individual and the stage of infection.
Early symptoms may include:
- Fever or chills
- Headache
- Fatigue
- Muscle and joint aches
- Swollen lymph nodes
- A rash, including the characteristic erythema migrans rash in some cases
As Lyme disease progresses, additional symptoms may occur. Some people may experience joint pain or swelling, neurological symptoms, or heart-related complications.
Because many Lyme disease symptoms can also occur with other conditions, symptoms alone cannot confirm a diagnosis.
What About the Lyme Disease Rash?
One of the most recognizable signs associated with Lyme disease is the erythema migrans rash. It may gradually expand from the site of the tick bite and can sometimes resemble a bull’s-eye.
However, the classic appearance is not present in every case. A person should not assume they have not been exposed to Lyme disease simply because they never noticed a typical rash.
How Is Lyme Disease Diagnosed?
Healthcare professionals may consider several factors when evaluating possible Lyme disease, including symptoms, physical findings, exposure history, geographic location, and laboratory testing.
Blood tests can be useful, but their interpretation depends on factors such as timing and the stage of infection. Testing is only one part of the overall evaluation.
If you think you may have been exposed to an infected tick, sharing that information with your healthcare provider can help provide important context.
Why Can Lyme Disease Be Complex?
Lyme disease does not look exactly the same in everyone. Symptoms can overlap with other tick-borne infections and a variety of other health conditions.
Ticks can also transmit multiple pathogens. In some cases, people exposed to ticks may develop coinfections such as Babesiosis, Anaplasmosis, or Ehrlichiosis. These infections can cause overlapping symptoms and may complicate the overall picture.
This is why understanding a person’s history and symptoms as a whole can be important when evaluating possible tick-borne illness.
Taking Tick Exposure Seriously
If you spend time hiking, camping, gardening, or participating in other outdoor activities in areas where ticks are present, taking steps to prevent tick bites can reduce your risk. Check yourself, children, and pets for ticks after spending time outdoors, and remove attached ticks promptly.
If you develop unexplained symptoms following a possible tick exposure, consider speaking with a qualified healthcare professional.
At Functional Healing with Dr. Tara, we believe that understanding the bigger picture can be valuable when navigating complex health concerns. Learning about Lyme disease, its symptoms, potential coinfections, and the factors involved in evaluation can help you have a more informed conversation about your health.
