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Insect Bite or Sting


Most insect bites and stings are not dangerous and go away without treatment. Your symptoms may be mild, or you may develop anaphylaxis. Anaphylaxis is a sudden, life-threatening reaction that needs immediate treatment. Common examples of insects that bite or sting are bees, ticks, mosquitoes, spiders, and ants. Insect bites or stings can lead to diseases such as malaria, West Nile virus, Lyme disease, or Rocky Mountain Spotted Fever.


Call 911 for signs or symptoms of anaphylaxis,

such as trouble breathing, swelling in your mouth or throat, or wheezing. You may also have itching, a rash, hives, or feel like you are going to faint.

Return to the emergency department if:

  • You are stung on your tongue or in your throat.
  • A white area forms around the bite.
  • You are sweating badly or have body pain.
  • You think you were bitten or stung by a poisonous insect.

Contact your healthcare provider if:

  • You have a fever.
  • The area becomes red, warm, tender, and swollen beyond the area of the bite or sting.
  • You have questions or concerns about your condition or care.


  • Antihistamines decrease itching and rash.
  • Epinephrine is used to treat severe allergic reactions such as anaphylaxis.
  • Take your medicine as directed. Contact your healthcare provider if you think your medicine is not helping or if you have side effects. Tell him of her if you are allergic to any medicine. Keep a list of the medicines, vitamins, and herbs you take. Include the amounts, and when and why you take them. Bring the list or the pill bottles to follow-up visits. Carry your medicine list with you in case of an emergency.

Steps to take for signs or symptoms of anaphylaxis:

  • Immediately give 1 shot of epinephrine only into the outer thigh muscle.
  • Leave the shot in place as directed. Your healthcare provider may recommend you leave it in place for up to 10 seconds before you remove it. This helps make sure all of the epinephrine is delivered.
  • Call 911 and go to the emergency department, even if the shot improved symptoms. Do not drive yourself. Bring the used epinephrine shot with you.

Safety precautions to take if you are at risk for anaphylaxis:

  • Keep 2 shots of epinephrine with you at all times. You may need a second shot, because epinephrine only works for about 20 minutes and symptoms may return. Your healthcare provider can show you and family members how to give the shot. Check the expiration date every month and replace it before it expires.
  • Create an action plan. Your healthcare provider can help you create a written plan that explains the allergy and an emergency plan to treat a reaction. The plan explains when to give a second epinephrine shot if symptoms return or do not improve after the first. Give copies of the action plan and emergency instructions to family members, work and school staff, and daycare providers. Show them how to give a shot of epinephrine.
  • Carry medical alert identification. Wear medical alert jewelry or carry a card that says you have an insect allergy. Ask your healthcare provider where to get these items.
    Medical Alert Jewelry

If an insect bites or stings you:

  • Remove the stinger. Scrape the stinger out with your fingernail, edge of a credit card, or a knife blade. Do not squeeze the wound. Gently wash the area with soap and water.
  • Remove the tick. Ticks must be removed as soon as possible so you do not get diseases passed through tick bites. Ask your healthcare provider for more information on tick bites and how to remove ticks.

Care for a bite or sting wound:

  • Elevate the affected area. Prop the wound above the level of your heart, if possible. Elevate the area for 10 to 20 minutes each hour or as directed by your healthcare provider.
  • Use compresses. Soak a clean washcloth in cold water, wring it out, and put it on the bite or sting. Use the compress for 10 to 20 minutes each hour or as directed by your healthcare provider. After 24 to 48 hours, change to warm compresses.
  • Apply a paste. Add water to baking soda to make a thick paste. Put the paste on the area for 5 minutes. Rinse gently to remove the paste.

Prevent another insect bite or sting:

  • Do not wear bright-colored or flower-print clothing when you plan to spend time outdoors. Do not use hairspray, perfumes, or aftershave.
  • Do not leave food out.
  • Empty any standing water and wash container with soap and water every 2 days.
  • Put screens on all open windows and doors.
  • Put insect repellent that contains DEET on skin that is showing when you go outside. Put insect repellent at the top of your boots, bottom of pant legs, and sleeve cuffs. Wear long sleeves, pants, and shoes.
  • Use citronella candles outdoors to help keep mosquitoes away. Put a tick and flea collar on pets.

Follow up with your healthcare provider as directed:

Write down your questions so you remember to ask them during your visits.

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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Learn more about Insect Bite or Sting (Aftercare Instructions)

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