Tick bites and disease
What are ticks?
Ticks are tiny bugs, about the size of a sesame seed, which feed on blood. Different ticks prefer feeding from different types of animals including people. While most tick bites do not result in disease, some do.
Ticks live in tall grass and wooded areas. They are easiest to spot on a person when they are feeding. Ticks burrow part way into the skin, bite, draw blood, and then drop off. The feeding tick's mouth will be under the skin, but the back parts will be sticking out. When they are full of blood, they are usually blue-grey in colour. This is called an engorged ick.
What should I do if I find a tick on my skin?
If you find a tick on your skin, you need to remove it as soon as possible. Check your entire body and clothing. Do not stop when you find one tick. There may be more. Make sure the lighting is good, so you do not miss seeing the tick(s). If you cannot reach the tick or see it clearly, get someone else to remove the tick for you or see a health care provider to remove it. Be sure to check for ticks on your children and pets if they have been out in an area where ticks can live.
When to see a health care provider to remove the tick
See your health care provider to remove the tick if it has buried itself deep into your skin. This happens if the tick has been on you for several hours or even a day or two. When a tick has burrowed deep into your skin, it is very hard to remove the tick without leaving some mouth parts behind, which can cause an infection.
How to remove a tick yourself
If you can remove the tick yourself, follow these instructions.
- Use tweezers to gently get a hold of the tick as close to its mouth as possible. The body of the tick will be above your skin. Do not touch the tick with your bare hands. Wear gloves if possible.
- Steadily lift the tick straight off the skin. Do not squeeze the tick because this can force its stomach contents into the wound and increase the chance of an infection. Do not jerk, unscrew or twist the tick because this may separate the head from the body. It is very important to make sure that all of the tick, including the mouth parts buried in your skin, is removed.
- Once the tick has been removed, clean the area with soap and water or an alcohol-based sanitizer. You may also put a small amount of antibiotic ointment on the area. Wash your hands with soap and water.
You cannot remove a tick by burning it or covering it with grease, gasoline, nail polish, essential oils, or petroleum jelly. This does not work and may increase the chance of getting an infection.
What to do with the tick once it is removed
If the tick is alive, put it in a small container (e.g., a pill bottle) with a tight-fitting lid along with a cotton ball dampened with water to keep it alive. Do not use rubbing alcohol or any other liquid. The container with the tick can be stored briefly in a refrigerator.
Ticks found on a British Columbia resident can be tested or identified by:
- Submitting a photo of the tick to eTick.ca. This is the preferred method to have ticks identified quickly. If the tick is identified as the type of tick that can carry diseases, you will be provided instructions to keep the tick in a freezer for 30 days and monitor for signs of illness. If signs of illness develop, see your health care provider immediately
- Visiting or contacting your veterinarian for tick found on pets
- Contacting your health care provider as soon as possible. They may decide to submit the tick to the BC Centre for Disease Control Public Health Laboratory for tick-borne disease testing
Kill the tick before disposing of it by drowning it in rubbing alcohol or freezing it for several days. Do not attempt to squash ticks with bare fingers as this can lead to infection through breaks in your skin. Ticks can be disposed of in your household garbage once dead.
How do I avoid getting bitten by a tick?
You can help protect yourself and your family against tick and insect bites by following these tips when you spend time in an area where ticks may live:
- Walk on cleared trails wherever possible when walking in tall grass or woods
- Wear light coloured clothing and closed-toe shoes, tuck your top into your pants, and tuck your pants into your boots or socks
- Use an insect repellent containing DEET or Icaridin on your clothes and on all uncovered skin. Reapply it as directed on the container. For more information about insect repellents and DEET, please visit HealthLinkBC File #96 Insect repellent and DEET
- Check clothing, gear, and your full body when leaving an area where ticks may live, including your scalp, folds of skin, under the arms and behind the knees. Have someone help you check young children
- Regularly check household pets that go into tall grass and wooded areas
Which diseases can be spread by ticks?
Several diseases can be passed to humans from tick bites. The most well-known is Lyme disease.
Borrelia burgdorferi, the organism that causes Lyme disease, has been found in ticks collected from many areas of British Columbia, and dozens of Lyme disease cases have been identified in the past 15 years. Many people with Lyme disease have not travelled outside of the province, and it is likely they contracted the disease in B.C.
Not all ticks carry the bacteria for Lyme Disease, and there is only a very small chance of ticks giving it to you. However, since Lyme disease is such a serious disease, it is worth taking steps to avoid being bitten.
Other diseases passed on by ticks include relapsing fever, tularemia, Rocky Mountain Spotted Fever (RMSF), Q fever, and anaplasmosis. All of these diseases are rare in British Columbia.
Certain ticks may release a toxin that can cause temporary paralysis. For this reason, it is important to remove the whole tick as soon as possible.
What are the symptoms of tick-related diseases?
If you have the following symptoms within days or weeks after being bitten by a tick, report them to your health care provider right away. Tell your health care provider when and where a tick bit you.
- General symptoms of fever, headache, muscle and joint pains, fatigue, or weakness of the muscles of the face
- Skin rash, especially one that looks like a bull's eye, which may or may not be around the bite
- In very rare cases, paralysis may occur. The paralysis usually starts in the feet and legs and works its way up to the upper body, arms and head. The paralysis usually starts within a few hours to a day or two days after the bite
What is the treatment?
There are currently no vaccines licensed in Canada for any diseases passed on by ticks.
Lyme disease and other tick-related diseases can be treated with antibiotics. Early diagnosis and treatment can help prevent complications.