What is a bug bite bruise? (2023)

You probably don't think sobruiseswhen it comes to bug bites. Red spots, bumps, and itching are the most common symptoms of insect bites. However, bites from insects such as spiders, hornets, wasps, mosquitoes, and ticks can cause bruising.

This article explains insect bites that can leave a bruise, insect bite symptoms, treatment, and possible complications.

What is a bug bite bruise? (1)

What kind of insect bite leaves a bruise?

Various insects can leave a bruise after a bite. Sometimes this reaction comes from an injury; In other cases, it only appears injured when the insect bite darkens.

be crazy

It is not typical for non-venomous spiders to leave a bruise after being bitten. However, if you are bitten by a poisonous spider, such asblack widowo onebrown recluse, the bite site may change from red to purple.

In addition to a bruised appearance, other symptoms of a venomous spider bite include:

  • Itch
  • efforts
  • Sweat
  • labored breathing
  • headache
  • nausea or vomiting
  • fever, chills
  • distress
  • hypertension(high blood pressure)

Venomous spider bites require immediate medical attention.

Pictures of spider bites: appearance and emergency signs.


bee stings– especially from hornets and wasps – are painful. Although not a primary symptom of a bite, bruising can occur around the bite as a result of the injury.

Other symptoms of wasp and wasp stings include:

  • efforts
  • redness
  • swelling
  • Itch

Allergic reaction

signs of aallergic reactioninclude showers,urticaria, dizziness, shortness of breath and loss of consciousness.


Mosquitoes are known for their red, itchy welts. But bruising can also occur, especially in people with a mosquito allergy known as "Skeeter's Syndrome.” Skeeter syndrome is not usually a life-threatening allergy.

Other symptoms are:

  • large swellings
  • heat
  • redness
  • Itch

Skeeter syndrome usually gets better in a few days. If your symptoms worsen or last longer, see a doctor about a possible skin infection.


tick bitesthey are painless, so it is important to check your body after being outdoors in tick-infested areas. When a tick lodges in your skin, the spot may appear red or purple.

Skin rashes often appear after the bite, especially with atick-borne disease. The rash can look like a target and is often pink or red, but it can also be darker.

Other symptoms of a tick-borne disease include:

(Video) Mysterious 'Bug Bite' Leaves Man's Arm Covered In Bruises

  • Fever
  • shaking chills
  • headache
  • fatigue
  • Muscular cramp

Keep in mind that symptoms of a tick-borne disease can take up to a few weeks to develop. If you notice any of the above symptoms after spending time outdoors, talk to a doctor.

If a bruise is accompanied by allergy or poisoning symptoms, such as shortness of breath, wheezing, nausea, or confusion, seek immediate medical attention.

Other symptoms of insect bites

The symptoms of an insect bite vary; However, they often share some common features. These include:

  • redness
  • welts
  • urticaria
  • efforts
  • Itch

What is anaphylaxis?

Anaphylaxis is a life-threatening allergic reaction that requires immediate medical attention. Symptoms include:

  • Itch
  • panting
  • difficulty breathing
  • confusion

Causes of bruises from insect bites

Often the cause of purple skin around an insect bite is your body's reaction to the insect's saliva or venom. For example if aMosquitoit sucks your blood, injects saliva into your skin. This exchange of fluids causes an itchy rash in most people and can also cause bruising.

In other cases, such as a bee sting or spider bite, if the venom penetrates the skin and surrounding tissues, it causes pain and inflammation.These reactions can sometimes cause bruising.

Some vector insects (responsible for spreading human diseases), such as ticks, can cause a purple-looking rash. These rashes are different from other reactions to insect bites because they suggest a systemic (body-wide) infection rather than a localized skin reaction.


Insect bites are usually a minor nuisance, but sometimes they can be more concerning. Hence the first step inTreatment of an insect biteidentify the culprit as this may determine the actions you take.

If you have a non-venomous, allergic, or infectious bite, the following is recommended:

  • Take an over-the-counter (OTC) medicineAnalgesicfor pain.
  • apply for onebag of iceto reduce swelling and pain and relieve itching.
  • use OTCAnti-picor cream, if required.
  • take without a prescriptionantihistaminesfor itching

Also, take preventative measures to avoid insect bites from use.Insect repellentwith DEET when spending time outdoors and keep your skin covered with clothing.

Complications of insect bites.

Complications from insect bites include allergic reactions, skin infections, poisoning, andNecrosis(Death of skin and tissues).


Allergy to bitesand insect bites require immediate medical attention. Signs of an allergic reaction are:

  • rinse
  • urticaria
  • swelling
  • dizziness
  • labored breathing
  • nausea
  • loss of consciousness
  • Shock

About 15% of deaths fromanaphylaxis(severe allergic reaction) arising from allergies to venom.

skin infections

Because insect bites injure the skin, they can cause aInfection🇧🇷 symptoms of askin infectioncontain:

  • rash
  • swelling
  • redness
  • efforts
  • pus
  • Itch


Necrosis is when infection leads to the death of the skin and surrounding tissues. This type of infection is more likely in poisonous spiders. Necrotizing infections are dangerous and require immediate medical attention. Symptoms include:

  • swelling
  • Blow
  • Skin that turns purple or black.
  • High fever
  • rapid heart rate
  • confusion
  • unconsciousness


Not all spider bites can make you sick, but some can. Symptoms of a venom sting include:

  • efforts
  • swelling
  • Necrosis
  • Fever
  • labored breathing

See a doctor right away if you experience the above symptoms after a spider bite.

(Video) What Bit Me? Spot These 12 Bug Bites


Some insect bites can cause bruising or a bruise-like appearance. Insects that can cause bruising include mosquitoes, ticks, bees, and spiders. Often a bruise is not a cause for concern, but after an insect bite or bite, watch for allergy symptoms, skin infections, necrosis, and more. If any of these warning symptoms accompany your insect bite, seek immediate medical attention.

A word from Verywell

Most of the time, insect bites are just a minor annoyance. However, sometimes they can be more worrisome. If you have been bitten or stung, watch for symptoms. If you are not sure whether to worry, it is best to play it safe and seek medical help.

frequent questions

  • Is it dangerous if an insect bite turns purple?

    It is not necessarily dangerous if an insect bite turns purple. Sometimes insect bites from the injury can cause bruising. However, in some cases it can be cause for concern, as it can be a sign of necrosis (skin and tissue death).If purple skin is accompanied by infection or allergy symptoms, see a doctor.

    Learn more:Causes of bruises

  • How do you recognize a spider bite?

    It is not always easy to identify the type of insect that bit you. However, some things can give clues. For example, if you were bitten from the inside and the bite is painful, it could have been a spider. If the spider was venomous, you may notice other symptoms such as swelling, necrosis, fever, or difficulty breathing.

    Learn more:Spider bite symptoms

  • Can mosquitoes bite through clothing?

    Yes, mosquitoes can bite through clothing. While covering exposed skin is a good precaution, using insect repellant is also a good idea.

    Learn more:natural mosquito repellent

    (Video) How to Become Immune to Mosquito Bites

13 fuentes

Verywell Health uses only quality sources, including peer-reviewed studies, to support the facts in our articles. read ourspublishing processto learn more about how we verify our content and keep it accurate, reliable, and trustworthy.

  1. Centers for Disease Control and Prevention.Symptoms of poisonous spider bites.

  2. Medicina Johns Hopkins.insect bites.

  3. S. Dhami, H. Zaman, E. Varga et al.Allergen immunotherapy for insect venom allergy: systematic review and meta-analysis.allergies. 2017;72(3):342-365. doi:10.1111/all.13077

  4. Die American Academy of Allergy, Asthma and Immunology.Defined Skeeter's Syndrome.

  5. Centers for Disease Control and Prevention.Symptoms of a tick-borne disease.

  6. Seattle Children's Hospital.insect bite.

  7. Centers for Disease Control and Prevention.Symptoms and treatment of mosquito bites..

  8. Children's Hospital of Philadelphia.Bee and wasp stings.

  9. Association of the American Academy of Dermatology.Tips to prevent and treat insect bites.

  10. E. Jerschow, RY Lin, MM Scaperotti, AP McGinn.Fatal anaphylaxis in the United States, 1999-2010: temporal patterns and demographic associations.Allergy Clinic J Immunol. 2014;134(6):1318-1328.e7.

  11. National Library of Medicine.skin infections.

    (Video) Skin Infection From Bug Bites - Daily Do's of Dermatology

  12. Doctor Johns Hopkins.What is necrotizing soft tissue infection??

  13. Rahmani F, Banan Khojasteh SM, Ebrahimi Bakhtavar H, Rahmani F, Shahsavari Nia K, Faridaalaee G.Poisonous spiders: bites, symptoms and treatment; a pedagogical review.Emerging (Tehran). 2014;2(2):54-58.

What is a bug bite bruise? (2)

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As a freelance writer, Kathi has experience writing reports and essays for national health, advocacy, and education publications. Most of her work focuses on parenting, education, health, and social justice.

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