Lyme Disease Cause, Signs, and Treatment (2024)

Lyme disease is a bacterial infection caused by a tick bite. Symptoms vary depending on how long someone has been infected.

Borrelia burgdorferi is the bacteria that causes Lyme disease in Rhode Island. Other types of Borrelia bacteria cause Lyme disease in the Mid-West, Europe and Asia.

Of all of the infections transmitted by tick and mosquito bites in the United States, Lyme disease is the most common. Every year, Rhode Island has one of the highest rate of Lyme disease in the country. According to the CDC, in 2021, there were 980 cases of Lyme disease in Rhode Island. Most cases of Lyme disease occur between the months of May through September with a peak in July.

The cause of Lyme disease

Lyme disease is contracted from the bite of an infected Ixodes scalpularis tick, also known as a Deer tick or Blacklegged tick. Deer ticks are very small relative to other ticks commonly found in Rhode Island such as the American dog tick or the Brown dog tick. Not all Deer ticks carry the bacteria that causes Lyme disease. Because the bacteria has to adapt from the environment of the tick’s body to survive in the very different environment of the human body, the tick must be attached for 12-48 hours before the bacteria is able to travel from the tick to infect a human.

Signs and symptoms of Lyme disease

Symptoms of Lyme disease depend on how recently someone was infected.

In the earliest stage of infection, a reddish rash appears at the site of the tick bite within the first month. This rash often looks like a “bull’s eye” with a slowly expanding red ring. However, it can also appear without a central clearing or take on a bluish hue. The rash can also have little blisters in the center and rarely is itchy or painful.

Unfortunately, many tick bites occur in places where you might not notice the tick, such as behind the knee or ear, or along the base of the scalp. Because the rash appears at the site of the tick bite, you might not see it. With or without antibiotics, the rash will eventually disappear.

If untreated, however, the bacteria then leave the skin and travel throughout the body to the nervous system, heart, muscles and joints. This usually occurs within the first one to two months after a tick bite. During this time, people may develop symptoms that include:

  • fever
  • fatigue
  • muscle pain
  • achy joints
  • headache
  • neck stiffness
  • Bell’s palsy (drooping of the right or left side of the face)

Respiratory symptoms or sinus/nasal congestion are not symptoms associated with Lyme disease. About two percent of people with Lyme disease will develop meningitis, one percent will develop inflammation of the heart and nine percent will develop Bell’s palsy.

Treating Lyme disease

Lyme disease is treated with antibiotics. It almost always can be treated with an oral antibiotic. The type and duration of antibiotics depends on the types of symptoms and duration of infection.

Fortunately, most people can be treated in clinic with a course of oral antibiotics, although a small number of people require hospitalization for monitoring and intravenous (IV) antibiotics.

The good news is that Lyme disease is curable. Most people feel better quickly with treatment. A small portion of people, despite treatment, go on to experience persistent symptoms such as fatigue and subjective cognitive slowing. These symptoms improve with time, although it can take months and sometimes years. If people do develop persistent symptoms, it is always important to make sure there isn’t something else going on that may require additional testing and different treatment.

Lyme arthritis

If Lyme disease remains untreated, in the following months to years it can evolve into what is known as Lyme arthritis. Lyme arthritis causes swelling and mild to moderate pain of the affected joint. Usually just one joint is affected and the most common is the knee, followed by the shoulder, ankle and elbow. Lyme arthritis is treated with a longer course of oral antibiotics but sometimes requires IV antibiotics. It is extremely unlikely for anyone to die from Lyme disease.

When to see a doctor for Lyme disease

  1. You find an attached tick. If you find a Deer tick that has been attached for possibly longer than 12 hours, your doctor can prescribe you a one-time dose of antibiotic that decreases your risk of developing Lyme disease. This dose must be taken within 72 hours of finding the tick or else it may not be effective.
  2. You develop a rash in the later spring or summer months. Treating rashes from Lyme disease promptly with a short course of antibiotics prevents progression of infection to the joints, heart and nervous system. Lyme testing during this stage of infection is usually unhelpful since the test is often negative early on in the infection’s course.
  3. You develop symptoms consistent with Lyme disease as described above. Some of the symptoms of Lyme disease can overlap with other tick borne infections such as Anaplasmosis, Babesiosis and Ehrlichiosis, which can be life threatening. Simple blood tests can differentiate these infections and often the treatment for Lyme disease, Anaplasmosis and Ehrlichiosis are the same.

If you develop fever, chills and muscle aches in the summer months in Rhode Island, you should contact your doctor!

Testing for Lyme disease

While Lyme disease is curable, the test for Lyme disease may stay positive for the rest of the patient’s life. Because Borrelia burgdorferi does not stay in the blood and is difficult to grow in a lab, it is unreliable to test directly for the bacteria with a blood test. Therefore, we test for antibodies the immune system makes after it has been exposed to the bacteria.

It takes a week or more for the body to make these antibodies, which is why a test may be negative early on in infection—the body simply has not had time to make antibodies at the level our tests detect. The body continues to make antibodies even after successful treatment and cure. Therefore, if someone had a positive antibody test to Lyme before treatment, it should stay positive for months to years to decades.

Visit our website to learn more about the Lifespan Lyme Disease Center and how we can help you.

Lyme Disease Cause, Signs, and Treatment (2024)

FAQs

Lyme Disease Cause, Signs, and Treatment? ›

Lyme disease is an infection that happens when an infected tick bites a human. The condition can cause joint pain. Antibiotics treat Lyme disease. Even after treatment, some symptoms may linger.

Can Lyme disease be treated and cured? ›

Usually, Lyme disease completely resolves with a short course of antibiotics. But Lyme disease is not always a simple illness—it can cause prolonged symptoms if left untreated and sometimes even despite effective treatment, a phenomenon which is not well understood.

What is Lyme disease caused by? ›

Lyme disease is an illness caused by borrelia bacteria. Humans usually get Lyme disease from the bite of a tick carrying the bacteria. Ticks that can carry borrelia bacteria live throughout most of the United States. But Lyme disease is most common in the upper Midwest and the northeastern and mid-Atlantic states.

What happens if Lyme disease is left untreated? ›

If Lyme disease continues to be left untreated, it can become established in various parts of the body over months or years after the initial infection. Symptoms include: Joint pain and swelling (Lyme arthritis). Approximately 60% of people not treated with antibiotics will develop recurring attacks of arthritis.

How long is too late for Lyme disease? ›

Late Lyme disease usually develops 6-36 months after a person first receives the causal infectious tick bite. The symptoms of late Lyme disease differ from the earlier stages.

What is stage 1 of Lyme disease? ›

Stage 1, or early localized Lyme disease, occurs within one month of the tick bite. You may have an expanding, circular red rash (erythema migrans), and/or flu-like symptoms. Some people do not have symptoms. Stage 2, or early disseminated infection, can develop days to weeks after you become infected.

Can you get Lyme disease without a tick bite? ›

There is no credible evidence that Lyme disease bacteria can be transmitted through air, food, water, or from the bites of mosquitoes, flies, fleas, or lice. Lone star ticks (Amblyomma americanum), the American dog tick (Dermacentor variabilis), the Rocky Mountain wood tick (D.

What are bad signs after a tick bite? ›

Watch for symptoms of tick-borne diseases in the weeks after a tick bite. These include muscle or joint aches, stiff neck, headache, weakness, fever, swollen lymph nodes, and other flu-like symptoms. Watch for a red spot or rash starting at the site of the bite (called "erythema migrans").

Can Lyme disease go by itself? ›

Even untreated, most people with the infection will cure it on their own and never develop complications. Untreated, complications that can occur later may include: Joint infection, usually involving a single large joint such as the knee. Nervous system disease, including meningitis and encephalitis.

Does Lyme disease stay with you for life? ›

While Lyme disease is curable, the test for Lyme disease may stay positive for the rest of the patient's life. Because Borrelia burgdorferi does not stay in the blood and is difficult to grow in a lab, it is unreliable to test directly for the bacteria with a blood test.

What organs does Lyme disease affect? ›

Lyme disease can affect different body systems, such as the nervous system, joints, skin, and heart.

Can you have Lyme for 20 years and not know it? ›

Individuals can have Lyme disease and not know it for years, mistakenly attributing their symptoms to other illnesses or being misdiagnosed.

What is the first signal of Lyme disease infection? ›

The first sign of Lyme disease is often an expanding round or oval red "bullseye" rash. If left untreated, people may develop neurological symptoms and heart problems, and have an approximately 60 percent chance of developing Lyme arthritis.

How soon after a tick bite do you need antibiotics? ›

Although not routinely recommended, taking antibiotics within three days after a tick bite may be beneficial for some persons. This would apply to deer tick bites that occured in areas where Lyme disease is common and there is evidence that the tick fed for more than one day.

How quickly can you tell if you have Lyme? ›

Early symptoms of Lyme disease start between 3 to 30 days after an infected tick bites you.

What is the most common indicator that your tick bite has Lyme disease? ›

Signs and symptoms of early Lyme disease typically include: A reddish rash or skin lesion known as erythema migraines (EM). The rash starts as a small red spot at the site of the tick bite anywhere from one week after to four weeks after the bite.

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