Tick Bite

What are ticks?

Ticks are small bugs that feed on the blood of animals, birds, and people. There are many different kinds of ticks. Black-legged ticks, or deer ticks, are usually no bigger than the head of a pin. Wood and dog ticks are usually much larger—about a quarter inch before feeding and half an inch when they are full of blood.

Ticks are found in woodlands, grasslands, and marshlands and at the seashore. Wild birds and animals, as well as domestic animals and pets such as dogs, horses, and cows, can carry ticks. Ticks may climb on humans from animals, leaves, or low-lying brush. Ticks cannot jump or fly.

How do I know if I have been bitten by a tick?

If you find a tick attached to your skin, you have been bitten. You usually will not feel anything when a tick bites you, but you may have a little redness around the bite.

Can I get sick from a tick bite?

There is little risk from the bite of a tick most of the time. However, some ticks carry infections that can be passed to people. For example:

  • Deer tick bites may cause Lyme disease. The symptoms of Lyme disease include a red rash that starts at the site of the bite and gets bigger. Over time, a similar rash may appear in other parts of the body. In some cases, the rash looks like a bulls-eye or target located on your skin. Some people have a rash without other symptoms. If you do have other symptoms, they may include feeling very tired, headache, muscle aches, joint pain or swelling, and a fever.
  • Wood tick or dog tick bites may cause Rocky Mountain spotted fever (RMSF). RMSF may first cause fever, headache, muscle aches, joint pain or swelling, and then a pink or red spotted rash.

Tick bites may cause other diseases as well.

How are tick bites treated?

If you find a tick attached to your body, you need to remove it. You can remove it yourself or get help from your healthcare provider. To remove an attached tick:

  • Grasp the tick with tweezers or fingers (covered with gloves or a tissue) as close to the skin as possible.
  • Gently pull the tick straight away from you until it releases its hold. Use a slow gentle pulling motion. Pulling the tick out too quickly may tear the body from the mouth, leaving the mouth still in the skin. If you are unable to remove the tick completely, you may need to see your healthcare provider.
  • Do not twist the tick as you pull, and try not to squeeze its body. Squeezing or crushing the tick could force infected fluids from the tick into the site of the bite.

After you have removed the tick, thoroughly wash your hands and the bite area with soap and water. Put an antiseptic such as rubbing alcohol on the area where you were bitten.

Infected ticks usually do not spread an infection until after the tick has been attached and feeding on your blood for several hours. Check for a rash and other symptoms for about 4 weeks after the bite.

Save the tick in case you later start having symptoms of disease and need to know what kind of tick bit you. Put the tick in a sealed plastic bag and keep it in the freezer. Identification of the tick may help your provider diagnose and treat your symptoms. If you do not have any symptoms of disease after 1 month, you can throw away the tick.

How can I help prevent tick bites?

  • In areas of thick underbrush, try to stay near the center of trails.
  • When you are outdoors, wear long-sleeved shirts tucked into your pants. Wear your pants tucked into your socks or boot tops if possible. A hat may help, too. Wearing light-colored clothing may make it easier to spot a small tick before it reaches your skin and bites. While you are outside, check for ticks every 4 hours and remove any ticks on clothing or exposed skin.
  • Use approved tick repellents on exposed skin and clothing. Don’t use more repellent than recommended in the package directions. Don’t put repellent on open wounds or rashes. When using sprays, don’t spray the repellent directly on your face. Spray the repellent on your hands first and then put it on your face, but not near your eyes or mouth. Then wash the spray off your hands.
    • Adults should use products with no more than 35% DEET. Children older than 2 months can use repellents with no more than 30% DEET. DEET should be applied just once a day. Wash it off your body when you go back indoors. Some products contain more than 35% DEET. The higher concentrations are no more effective than the lower concentrations, but they may last longer. Read the label carefully before applying.
    • Picaridin may irritate the skin less than DEET and appears to be just as effective.
    • Spray clothes with repellents because insects may crawl from clothing to the skin or bite through thin clothing. Products containing permethrin are recommended for use on clothing, shoes, bed nets, and camping gear. Permethrin-treated clothing repels and kills ticks, mosquitoes, and other insects and can keep working after laundering. Permethrin should be reapplied to clothing according to the instructions on the product label. You can buy clothing and hats pretreated with permethrin. Permethrin does not work as a repellent when it is put on the skin.
  • Treat household pets for ticks and fleas. Check pets after they have been outdoors.
  • Brush off clothing and pets before entering the house.
  • After you have been outdoors, undress and check your body for ticks. They usually crawl around for several hours before biting. Check your clothes, too. Wash them right away to remove any ticks.
  • Shower and shampoo after your outing.
  • Inspect any gear you have carried outdoors.
  • If you spend much time hiking, you may want to include a pair of tick tweezers in your first-aid kit. You can buy them at sporting goods stores.
Developed by RelayHealth.
Adult Advisor 2015.1 published by RelayHealth.
Last modified: 2014-05-27
Last reviewed: 2014-07-10
This content is reviewed periodically and is subject to change as new health information becomes available. The information is intended to inform and educate and is not a replacement for medical evaluation, advice, diagnosis or treatment by a healthcare professional.
Copyright ©1986-2015 McKesson Corporation and/or one of its subsidiaries. All rights reserved.

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