How To Prevent Tick Bites and Lyme Disease

What Is Lyme Disease and How Does It Spread?

Lyme disease is a bacterial infection caused by the spirochete bacteria Borrelia burgdorferi, which spreads to people through the bite of an infected blacklegged tick. These ticks live in grassy, wooded and brush‑filled areas.

While many types of ticks exist, only blacklegged ticks (known as deer ticks) found in the East and Midwest and western blacklegged ticks found along the Pacific coast can spread Lyme disease in the United States.

In most cases, Lyme disease does not spread right away. A tick usually needs to be attached to your skin for more than 24 hours before the bacteria can be passed to you. That’s why checking your skin after spending time outdoors is one of the most effective ways to reduce risk.

Ticks can be very small — sometimes no larger than a sesame seed — and easy to miss. Although they can attach anywhere, common tick bite locations include:

• Behind the knees
• Under the arms
• Around the ears
• Along the scalp or hairline

Early Symptoms of Lyme Disease

Symptoms of Lyme disease usually appear within 30 days of a tick bite, and often within the first week. Because symptoms don’t look the same in everyone, paying attention to changes in how you feel after tick exposure is important.

Early symptoms may include:

• Fever or chills
• Headache
• Fatigue
• Muscle or joint aches
• Swollen lymph nodes

About 70% to 80% of people with Lyme disease develop a rash called erythema migrans. This rash expands over several days. It may form a bull’s-eye shape, but it can appear in many shapes and may not look like a perfect target.

Since not everyone develops a rash, any flu‑like symptoms like fever, chills and muscle aches that appear after possible tick exposure shouldn’t be ignored. Recognizing symptoms early helps ensure timely evaluation and treatment.

If you notice a tick attached to your skin, removing it promptly and correctly with tweezers is an important first step.

“Prompt identification of a tick and tick removal is essential if you spot a tick,” says Michael P. Angarone, DO, an Infectious Disease doctor at Northwestern Medicine. 

How Is Lyme Disease Diagnosed?

If you suspect Lyme disease, call your doctor right away. Diagnosing Lyme disease starts with a medical evaluation that looks at your symptoms, recent outdoor time and any physical findings.

After your exam, blood tests are commonly ordered. These tests follow a two‑step process that checks for antibodies your immune system makes in response to the infection.

Because the body needs time to produce these antibodies, blood tests may not detect Lyme disease right away and may be falsely negative early on. Testing becomes more accurate in the weeks after infection, once the immune response is fully developed.

In some cases, testing isn’t needed. If you have the classic erythema migrans bull’s-eye rash, your doctor can diagnose Lyme disease based on the rash and your history alone.

How Is Lyme Disease Treated and How Quickly Do People Recover?

Lyme disease is usually highly treatable, especially when caught early. Most people are treated with antibiotics for 10 to 14 days. When treatment begins soon after symptoms appear, many people start feeling better within a few weeks.

Some people continue to experience symptoms, such as fatigue, joint pain or difficulty concentrating, even after completing treatment. This condition is known as post-treatment Lyme disease syndrome (PTLDS). While symptoms can last for months, they often improve gradually over time with supportive care and follow‑up.

Early diagnosis and treatment help reduce the risk of lingering symptoms and support a smoother recovery.

When Does Lyme Disease Require Urgent Care?

If Lyme disease is not treated early, it can spread beyond the skin and affect other parts of the body, including the nervous system, heart and joints. These more serious manifestations of Lyme disease can develop weeks to months after the initial infection.

Symptoms that need prompt medical attention include:

• Severe or ongoing headaches
• Neck stiffness
• New or spreading rashes
• Facial palsy, which may cause weakness or drooping on one side of the face
• Significant joint swelling or arthritis, especially in the knees
• Sharp, shooting nerve pain
• Irregular heartbeat or chest symptoms, which may be related to Lyme carditis (a rare condition that occurs when the bacterial infection spreads to the heart)

These symptoms may signal that Lyme disease has progressed and should be evaluated by your doctor as soon as possible. Early care can help prevent long‑term complications.

How To Prevent Tick Bites

“Lyme disease is a concern with increased outdoor activities and tick exposure,” says Dr. Angarone. “Preventing tick bites is the best way to prevent Lyme disease.”

A few simple habits can make a big difference when spending time outdoors.

Use insect repellent

Choose an insect repellent that is registered with the United States Environmental Protection Agency (EPA). Examples include those with the active ingredients DEET, picaridin or oil of lemon eucalyptus. (Don’t use oil of lemon eucalyptus on children younger than age 3.)

Apply repellent as directed, especially on exposed skin and clothing. But never apply insect repellent to a child’s hands, eyes or mouth.

Dress for protection

Wearing the right clothing adds an important layer of defense:

• Long-sleeved shirts
• Long pants
• Light‑colored clothing that makes ticks easier to see

Tucking pants into socks or boots can also keep ticks from reaching your skin.

Stay on clear paths

When hiking or walking outdoors, stay in the center of trails and avoid tall grass, brush and leaf piles where ticks are more likely to live.

Check for ticks

Tick checks should happen every time you and your kids come indoors after being outside.

Showering within a couple of hours after coming inside can help wash away unattached ticks and make it easier to spot any that remain.

Also, dogs and outdoor cats can carry ticks inside. Use veterinarian‑recommended tick prevention and check pets after they spend time outside since pets can get bitten by a tick, too.

Ticks brought indoors typically do not survive long without a host, especially in dry environments. However, they can live longer in damp areas.

Protect your yard

Ticks can live close to home. Reducing yard clutter helps discourage them:

• Keep grass trimmed.
• Remove leaf piles.
• Place play equipment in sunny, dry areas.

Is There a Cure for Lyme Disease?

“Lyme disease is treatable, so see your doctor if you have symptoms,” says Dr. Angarone.

Most people return to normal activities soon after treatment and make a full recovery. Any ongoing symptoms often improve gradually over time. But if your symptoms linger or cause concern, talk with your doctor who can help manage symptoms and support your recovery.