As the weather warms and more people head outdoors to enjoy nature, it’s important to be aware of Lyme disease, a tick-borne illness that can have serious health consequences if not detected and treated early. Whether you’re hiking in wooded trails, camping, or simply spending time in grassy backyards, understanding Lyme disease can help protect you and your loved ones.
What Is Lyme Disease?
Lyme disease is a bacterial infection caused by Borrelia burgdorferi (and, less commonly, Borrelia mayonii), transmitted to humans through the bite of infected black-legged ticks, commonly known as deer ticks. It is the most common vector-borne illness in the United States.
Epidemiology and Prevalence
Each year, approximately 30,000–40,000 cases of Lyme disease are reported to the CDC, but studies suggest the actual number may be over 400,000 annually, due to underreporting and misdiagnosis.
Lyme disease is most prevalent in the Northeastern, Mid-Atlantic, and Upper Midwestern U.S., but cases have been reported in nearly every state. Globally, it is also common in parts of Europe and Asia.
Who Is at Risk?
You’re at increased risk for Lyme disease if you:
- Spend time in wooded or grassy areas, especially in endemic regions
- Are active outdoors (campers, hikers, gardeners, hunters)
- Have pets that spend time outdoors
- Fail to use tick repellents or protective clothing
- Live in or travel to areas where ticks are known to thrive—especially in the late spring through early fall
Children aged 5–14 and adults over 50 are among the most frequently diagnosed age groups.
Symptoms of Lyme Disease
Early signs and symptoms (3–30 days after tick bite):
- Erythema migrans (EM) rash: Appears in about 70–80% of cases, often resembling a “bull’s-eye” and expanding over time
- Fever
- Chills
- Headache
- Fatigue
- Muscle and joint aches
- Swollen lymph nodes
Later symptoms (days to months after infection):
- Severe headaches and neck stiffness
- Additional EM rashes on other parts of the body
- Arthritis with severe joint pain and swelling (especially knees)
- Facial palsy (loss of muscle tone or droop on one or both sides of the face)
- Heart palpitations or Lyme carditis
- Dizziness or shortness of breath
- Inflammation of the brain and spinal cord
- Nerve pain, numbness, or tingling
Diagnosis
Diagnosis is based on:
- Clinical evaluation: presence of EM rash, symptoms, and history of tick exposure
- Blood tests: such as ELISA and Western blot to detect antibodies—though these may not show up until several weeks after infection
Because early treatment is most effective, doctors may start treatment based on symptoms and exposure risk before confirming with lab tests.
Treatment
Lyme disease is typically treated with antibiotics:
- Doxycycline (most common for adults and children over 8)
- Amoxicillin or Cefuroxime (alternatives for pregnant people and younger children)
Treatment duration is usually 10–21 days depending on the stage and severity. Most people recover fully with timely treatment, though some may experience lingering symptoms known as post-treatment Lyme disease syndrome (PTLDS).
Prevention Tips for Summer Travel and Outdoor Activities
- Use insect repellents: DEET (20–30%) on exposed skin; permethrin on clothing and gear
- Wear protective clothing: long sleeves, long pants, and tuck pants into socks when in tick-prone areas
- Avoid tick-infested areas: stay on trails and avoid tall grasses or brush
- Do tick checks: after coming indoors, check your entire body, clothing, and pets
- Shower soon after being outdoors: to help remove ticks before they attach
- Remove ticks promptly: use fine-tipped tweezers to grasp the tick close to the skin and pull straight out; clean the area with antiseptic
When to See a Doctor
Seek medical attention if:
- You develop a bull’s-eye rash, even without other symptoms
- You experience flu-like symptoms after a potential tick exposure
- You find an engorged tick on your body
- You have any neurologic or cardiac symptoms following time in tick-endemic areas
Early diagnosis and treatment can prevent long-term complications, so don’t delay reaching out to a healthcare professional.
The Bottom Line
Lyme disease is a preventable and treatable illness, but awareness is key. As you head outdoors this summer, take steps to protect yourself and your family. Enjoy nature, but do it wisely.
If you have any concerns about tick exposure or symptoms, consult your doctor promptly. Early action can make all the difference.
