Tick bites can be harmless or they can infect you with diseases like Lyme disease or spotted fever. It’s best to try to prevent tick bites or to find tick bites early.
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Ticks are parasites that feed on warm-blooded hosts by biting them. A tick bite can infect humans and animals with bacteria, viruses and protozoans (organisms made up of one cell) that can cause diseases. Some of these conditions can be very serious and may include:
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Other conditions spread by ticks include:
Ticks are typically small and difficult to see until they have been attached for some time. They feed on your blood and become larger and easier to see.
Ticks are parasites that feed on warm-blooded hosts. They are related to mites and spiders because they are all arthropods. That means they have eight legs. There are many kinds of ticks. Some of the most common ticks in the U.S. include:
Ticks can vary in size and color. Some are larger. Some are brown or reddish-brown. Others are darker. Some have lighter markings on their backs.
The Centers for Disease Control and Prevention (CDC) reports 50,865 cases of diseases caused by tick bites in the U.S. in 2019.
You might not even know you’ve been bitten by a tick. Most don’t cause pain or itching but some do. Some tick bites don’t cause disease. Sometimes you can remove the tick before it can pass on any germs.
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The tick bite itself may not cause symptoms except for some type of skin reaction, like a rash or a small hard lump. The infection that tick bites can give you may begin to cause symptoms.
Many of the conditions caused by ticks have common symptoms that include:
Some rashes caused by ticks indicate the infection. Small reddish or purplish spots (called petechiae) happen in Rocky Mountain spotted fever.
Expanding rashes that may look like a bulls-eye are the erythema migrans signal of Lyme disease. A similar rash happens with southern tick-associated rash illness or STARI. STARI’s rash may be known as the Lone Star tick rash.
Some rashes can just look like small red or darker-colored blotches that can be difficult to see.
It might be hard to tell if you have a tick bite until they have fed on your blood and become larger. That’s why it’s important to check yourself when you’ve been in places where ticks live.
Ticks can get onto any part of your body, but they move to their preferred places, which is usually a place with soft skin and plenty of blood. For people, this means:
Ticks like wooded areas and high grasses. Paying attention if you walk in these types of areas will help you be aware of the possibility of tick bites. They like leaves. If you hike trails, try to stay in the center away from fallen leaves and brush.
Sometimes you might be able to find and keep the tick that has bitten you. Ticks aren’t like other insects that bite you many times. They usually bite once and then burrow into your skin. If this happens and you’re able to find and remove the tick, you or your healthcare provider can identify the type of tick. You want to know if it’s the kind of tick that spreads disease.
Your provider will ask you questions about your medical history and about your time spent in tick-infested areas. In some cases, you may need blood tests.
If you experience a tick bite, the best way to remove it is by taking the following steps:
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You should call your provider:
There is a certain kind of tick bite that causes something called alpha-gal syndrome. The condition is also called alpha-gal allergy, red meat allergy or tick bite meat allergy.
Alpha-gal is a type of sugar molecule that is found in meat and other products made from mammals. Alpha-gal isn’t found in humans.
Studies in the U.S. and elsewhere indicate that tick bites cause alpha-gal syndrome, which may develop two to six hours after you eat meat, dairy or take medicines that are made with gelatin. Signs and symptoms may include gastrointestinal problems such as:
Other signs and symptoms may include:
Actually, alpha-gal syndrome can be life-threatening. Lone Star ticks and black-legged ticks may be the ones found in U.S. that cause alpha-gal syndrome.
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If you are planning an outdoor activity, especially those in a heavily wooded area, it is important to follow a few simple precautions to protect yourself from tick bites.
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Yes, there's a vaccine called TicoVac™ to prevent tick-borne encephalitis. It's approved in the U.S. for adults and children and has been used in Europe for many years. Vaccines for other diseases caused by tick bites, such as Lyme disease, aren’t currently available.
If you’re bitten by a tick, you may have absolutely no problems. If you have any concerns, contact your healthcare provider anyway.
In some cases, providers may decide to begin treatment even before a disease has been diagnosed. This is true if your provider suspects Lyme disease. The percentage of ticks that can infect you with Lyme disease can be as high as 50% in some areas.
Generally, you won’t need antibiotics to treat most tick bites.
See your healthcare provider if you find a tick bite or a tick burrowed into you.
Make sure to see your provider if you start to have signs or symptoms of tick-borne disease weeks or days after you’ve been in areas with ticks. These signs or symptoms include:
A note from Cleveland Clinic
Even thinking about ticks may make you feel itchy. The best way to deal with them is to try to prevent them from landing on you or biting you in the first place. Make sure to use protection before you go hiking. Prevent your pets from ticks, too. If you do get bitten, try not to panic. Not every tick bite will lead to further illness, but if you do develop flu-like symptoms, contact your healthcare provider for next steps.
Last reviewed on 02/27/2022.
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