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Aug. 9, 2024—When it comes to concerns about what some ticks spread with their bites, Lyme disease often gets the spotlight. But it's not the only risk from ticks. The U.S. is home to more than a dozen tick-borne conditions, the Centers for Disease Control and Prevention (CDC) reports. Here are a few of them.

Powassan virus. While rare, Powassan virus cases have been increasing. Black-legged and groundhog ticks can spread this illness, which can cause severe infections of the brain and spinal cord and sometimes chronic headaches, muscle loss and memory problems. Early symptoms include fever, headache, vomiting and weakness. Confusion, trouble speaking, loss of coordination and seizures can occur if the illness progresses.

Rocky Mountain spotted fever. The American dog tick, the Rocky Mountain wood tick and the brown dog tick can spread this illness, which can be fatal without prompt antibiotic treatment. A rash is a hallmark sign; it usually follows fever. Other symptoms include headache, nausea, and stomach and muscle pain. Ticks (and mites) can also spread other, less severe spotted fevers—for instance, Pacific Coast tick fever—that often leave a dark scab.

Ehrlichiosis. Humans can get this from the lone star tick. Early symptoms include fever, rash, chills and aches. Timely antibiotic treatment usually prevents severe complications. But having a weakened immune system can make you more likely to get very sick from this tick-borne disease.

Babesiosis. This is caused by parasites transmitted by the black-legged tick. Some people have flu-like symptoms. Infections also can lead to anemia (a low number of red blood cells). Although treatable, babesiosis sometimes causes severe illness among older adults and those with underlying conditions.

Alpha-gal syndrome (red meat allergy). While it's an allergy rather than a disease, an allergic reaction to the sugars in many meats and related products, including cow's milk, can be caused by a tick bite. The lone star tick is the prime suspect, but it's possible that other ticks can cause the allergy. Cases are most common in the Southern, Eastern and Central United States.

Prevent tick bites

Know which ticks to watch out for in your area. Then take steps to avoid their bites—especially during the warmer months and if you spend time in grassy, brushy or wooded areas. Try these tips from CDC.

Before you head out:

Pre-treat to repel ticks. Treat your boots, clothing, and hiking or camping gear with products containing 0.5% permethrin. Permethrin will be effective on your clothing or gear through several wash cycles.

When you're outdoors:

Stay on trails. You're less likely to pick up ticks there. Avoid brush or branches that hang over your path.

Use bug spray. Look for a product registered with the U.S. Environmental Protection Agency, such as sprays that use DEET or oil of lemon eucalyptus, and follow the instructions.

After you go inside:

Take a shower. Do this soon after you've been where ticks live.

Check your clothes. Putting clothes in a hot dryer for 10 minutes may kill ticks.

Inspect your body for ticks. Pay special attention to the areas under the arms, in and around the ears, in the belly button, the back of the knees, in the hair, between the legs, and around the waist. If your pets hit the trail with you, check them too. Dogs can get sick from ticks. And ticks can enter your home by hitching a ride on pets.

If you do find a tick, you will want to remove it as soon as possible. If you get sick after being in a tick-infested area, tell your doctor.

Sources

• Centers for Disease Control and Prevention. "About Alpha-Gal Syndrome." https://www.cdc.gov/alpha-gal-syndrome/about.
• Centers for Disease Control and Prevention. "About Babesiosis." https://www.cdc.gov/babesiosis/about/index.html.
• Centers for Disease Control and Prevention. "About Other Spotted Fever Rickettsioses." https://www.cdc.gov/other-spotted-fever/about/index.html.
• Centers for Disease Control and Prevention. "About Rocky Mountain Spotted Fever." https://www.cdc.gov/rocky-mountain-spotted-fever/about.
• Centers for Disease Control and Prevention. "About Ticks and Tickborne Disease." https://www.cdc.gov/ticks/about.
• Centers for Disease Control and Prevention. "Data and Maps for Powassan." https://www.cdc.gov/powassan/data-maps/index.html.
• Centers for Disease Control and Prevention. "Ehrlichiosis: Causes and How It Spreads." https://www.cdc.gov/ehrlichiosis/causes/index.html.
• Centers for Disease Control and Prevention. "Emerging Tick Bite-Associated Meat Allergy Potentially Affects Thousands." https://www.cdc.gov/media/releases/2023/p0727-emerging-tick-bites.html.
• Centers for Disease Control and Prevention. "Powassan: Symptoms, Diagnosis, and Treatment." https://www.cdc.gov/powassan/symptoms-diagnosis-treatment.
• Centers for Disease Control and Prevention. "Preventing Tick Bites." https://www.cdc.gov/ticks/prevention.
• Centers for Disease Control and Prevention. "Preventing Ticks on Pets." https://www.cdc.gov/ticks/prevention/preventing-ticks-on-pets.html.
• Centers for Disease Control and Prevention. "Signs and Symptoms of Ehrlichiosis." https://www.cdc.gov/ehrlichiosis/signs-symptoms/.
• Centers for Disease Control and Prevention. "Transmission of Powassan Virus." https://www.cdc.gov/powassan/php/transmission/.
• Centers for Disease Control and Prevention. "What to Do After a Tick Bite." https://www.cdc.gov/ticks/after-a-tick-bite/index.html.