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Doctor insights on: Allergic Reaction To Insect Bites Circular Rash At Site Of Tick Bite

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Can I have an allergic reaction to a tick bite?

Can I have an allergic reaction to a tick bite?

Tick bite allergy: Hello, our immune system reacts typically after it has been exposed to a particular allergen or trigger in the past. After the first exposure, we activate one part of the immune system so that the next time we are exposed, we have developed antibodies to protect us from the exposure. So, yes you could be allergic or you are showing a possible reaction to lymes disease. See your doctor.

Insect Bites (Definition)

Insect bites are from mosquitos, spiders, flies, ticks, and other species that use their mandibles (jaws) to attach to a person or other animal. They can then suck blood out of their "prey" and leave saliva proteins that cause itching and swelling. Other insect species, like bees, yellow jackets, wasps, hornets and fire ants actually inject venom into their prey and can not only cause localized pain and swelling, but severe, acute allergic reactions in ...Read more


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Can you have an allergic reaction to a tick bite?

Can you have an allergic reaction to a tick bite?

Yes: Yes, but not an anaphylactic reaction to the tick bite. Usually it is only an itchy local reaction. This is a sign that you are developing an allergy to a component of the tick saliva. It is common for the bite site to itch for several months. It is not a sign of infection. This can set you up to develop other allergies. For more information check out the "healthguide" " delayed meat allergy...".

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What is the definition or description of: Circular rash at the site of a tick bite?

What is the definition or description of: Circular rash at the site of a tick bite?

Lyme Disease: Sometimes Lyme disease may cause a red, radial rash that is clear in the center. This is caused by Borrelia burgdorferi infection.

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Could a tick bite develop a hematoma instead of a rash? Got bitten in Cuba by some insect and got an egg sized hematoma. Doctor didn't think it could. But 3 weeks exhausted and now neck stiffness!

Could a tick bite develop a hematoma instead of a rash? Got bitten in Cuba by some insect and got an egg sized hematoma. Doctor didn't think it could. But 3 weeks exhausted and now neck stiffness!

Possible infection: Tick bite do not always cause a rash, and in theory, any insect bite or trauma could cause a hematoma. Your description suggests a possible infection. Please see a doctor for evaluation and appropriate treatment

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Should I go to the doctor for a tick bite? Very small Tick removed 2 days ago. Red itchy rash at site of tick bite. Applied cortisone cream.

Should I go to the doctor for a tick bite? Very small Tick removed 2 days ago. Red itchy rash at site of tick bite. Applied cortisone cream.

See DR: Tiny tick= risk for Lyme disease. You have a local reaction to the tick. There is good evidence for using a single dose of antibiotic, typically 200mg Doxycycline (I prefer minocycline) within 48 hrs after discovery of a deer tick to prevent Lyme. You need to be alert and ready for possible Lyme during the next 3 weeks. Unfortunately the blood tests are not reliable and sometimes the primary erytm

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My child has a weird circular rash after getting a tick bite. Is this something I should be concerned about?

My child has a weird circular rash after getting a tick bite. Is this something I should be concerned about?

Yes: A rash around a tick bite should be evaluated promptly. It may be a local reaction or a sign of lyme disease. If you cannot see your pediatrician immediately, take several good pics of the rash, especially if it is changing rapidly.

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How long do tick bite rashes last?

How long do tick bite rashes last?

Up to you: If you are allergic to the bites, then they will itch for weeks. If you scratch them, they will itch until you quit scratching them. They can cause hard bumps called nodules if you continue to rub or scratch. Also, are the fleas still around? Other bites can look like flea bites and last a long time, such as scabies and other mites. Hydrocortisone cream and oral Benadryl (diphenhydramine) will help the itch.

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Are there treatment guidelines for allergic reaction to insect bites?

Are there treatment guidelines for allergic reaction to insect bites?

Insect bites: Treatment will depend on the severity of your condition. It is important to note that no specific antivenom is available to counteract the poison injected by the insect. The majority of problems requiring medical treatment result from the allergic reaction to the sting. Many of the complications from an allergic reaction respond well to various medications-when given in time.

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I need a straight answer. What is allergic reaction to insect bites?

I need a straight answer. What is allergic reaction to insect bites?

What it says.: If you get stung or bitten by an insect, and you are allergic to the insect's venom or saliva, you develop an allergic reaction to the sting or bite. Usually it's just itching, redness, and swelling around the bite, but in rare cases it can evolve into anaphylactic shock which is life-threatening. Antihistamines may help mild cases, but if you have trouble breathing or other symptoms see a doctor.

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What are the tests for allergic reaction to insect bites?

What are the tests for allergic reaction to insect bites?

Skin test or blood: When you see an allergist, they will first take a detailed history of your symptoms from the bite. And the type of insect involved, if known...Depending on the insect, a series of simple scratch tests can be done, or sometimes a blood testis done first. It depends on your reaction history.

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If I develop allergic reaction to insect bites, how will it be treated?

If I develop allergic reaction to insect bites, how will it be treated?

Allergy: Lots of different meds can be used. Antihistamines are very common but stopping the medicine (or other thing) that causes the reaction is the first thing to do, if known. Topical and systemic steroids are also commonly used (orally or injected).

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10 days after tick bite. Bite healed but around it is a rash and is very red.

10 days after tick bite. Bite healed but around it is a rash and is very red.

Bullseye rash?: It is common for the area immediately around the bite to be red, but if there is a clear area around that surrounded by a red ring that is a sure sign of Lyme. A single dose of doxycycline after 10 days would be worthless. ILADS (the association of Lyme specialists) recommends 200 mg of doxycycline 2x/day for 30 days. A tick bite can also cause Babesia, Bartonella, Ehrlichia & other infections.

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How long does the rash from a tick bite ;ast?

Depends: There are multiple diseases that can be transmitted by a tick bite. Lyme disease- the rash begins in 3-4 weeks and resolves over several weeks. Rocky mountain spotted fever-the rash begins after 14 days and usually resolves with 10 days of treatment. There are others........

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I have the bullseye rash around a tick bite but no other symptoms of Lyme disease. Should I still get a test done?

I have the bullseye rash around a tick bite but no other symptoms of Lyme disease. Should I still get a test done?

Get Rx & blood test!: A bullseye rash around a tick bite is considered proof of lyme disease.If you do not have symptoms yet, you almost certainly will over time. It takes time for a blood test to turn positive & you should not wait for this; the earlier you start treatment the better the outcome. Many lyme specialists advise Doxycycline 200 mg 2x/day for a month to be safe. Also get tested for co-infections like babesia.

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Treatment for a tick bite that has no big rash?

Treatment for a tick bite that has no big rash?

Depends: On whether you have any other symptoms that could be associated with a tick-borne illness. If no symptoms, then no treatment is needed. If unsure, see your doctor.

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I have a rash on my leg. How can I tell if it is from a bite? I'm particularly concerned about a tick bite.

I have a rash on my leg. How can I tell if it is from a bite? I'm particularly concerned about a tick bite.

See a doctor: Tick bites can cause Lyme disease and early treatment is important. See a doctor and ask about doxycycline. The classic rash is target shaped with a pink expanding ring and clear center.

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Discovered a rash 24-48 hours after a tick bite (size 10-15 cm). Doctor prescribed Penicillin for 10 days. No other symptoms. Is the prognosis good?

Discovered a rash 24-48 hours after a tick bite (size 10-15 cm). Doctor prescribed Penicillin for 10 days. No other symptoms. Is the prognosis good?

Likely: It all depends on how long the Tick was attached and if the rash was typical for erythema marginatum. Typically if there is strong suspicion for tick disease the antibiotic used is Doxycycline, unless there is an allergy. There is an excellent web site at the CDC that reviews management. Blood work is always available to look for Lyme disease.

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Can the bullseye rash develop in one day from a tick bite?

14 days: The bullseye rash of lyme disease takes about 14 days to show up. You could have an allergic reaction to a bug bite that will develop within a day. Infection from a bite, not lyme disease, starts getting worse after about 2-3 days.

Dr. John Chiu
2,606 Doctors shared insights

Allergies (Definition)

Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more


Dr. John Chiu
1,036 Doctors shared insights

Allergic Reaction (Definition)

Sensitivities to substances, called allergens, that come into contact with the skin, nose, eyes, respiratory tract, and gastrointestinal tract. They can be inhaled into the ...Read more