May 8, 2025|7 min read

Do Centipedes Bite and Are They Poisonous?

Everything you need to know about centipede bites, venom effects, symptoms, treatment, and when to seek medical attention.

Centipedes are not typically aggressive towards humans, but they can inflict painful "bites" when provoked. They do so using their forcipules — stinger-like appendages that are a modified pair of legs capable of piercing skin. This results in a wound often characterized by a pair of bleeding bite marks forming an inverted V shape.

These bites inject venom which enables centipedes to immobilize prey like insects and worms. While most centipede bites are not life-threatening for humans, the venom can cause localized pain and swelling — and may pose serious risk to children and those susceptible to allergic reactions.

Quick Answer

Yes, centipedes can bite and are venomous — but bites are rare and usually not dangerous to healthy adults. Symptoms typically include localized pain, swelling, and redness lasting 30 minutes to 3 days.

Bite Severity Guide

House Centipede
Mild pain, rarely breaks skin

Common Centipedes
Moderate pain, swelling 1-3 days

Giant/Scolopendra
Severe pain, may need medical care

Why Do Centipedes Bite?

Centipedes are carnivorous creatures with adept hunting skills who use their venomous forcipules to capture, immobilize, and consume prey. The size of prey depends on the centipede — smaller species feed on insects and spiders, while larger species can hunt mice, birds, bats, reptiles, and frogs.

Why They Bite Humans

Bites to humans are defensive actions, not predatory. Centipedes are not naturally aggressive toward humans. Most species are too small to cause significant harm, but bites from the Scolopendra family can cause more severe symptoms.

Common Bite Scenarios

Bites typically occur when centipedes are handled roughly, stepped on, or feel threatened. This sometimes happens when they hide in shoes or clothing, forcing them to defend themselves.

Are Centipede Bites Common?

Centipedes prefer to stay hidden and avoid humans. They're mostly nocturnal, coming out at night to hunt. This makes interactions rare and bites even rarer. When bites do occur, they're usually protective reactions to disturbances.

Good News

Despite the pain associated with centipede bites, they are rarely life-threatening. Centipedes have no desire to interact with creatures that may pose a threat to their survival, so they stay hidden most of the time.

How Do Centipedes Bite?

Centipedes administer venomous bites using a specialized pair of hollow, clawed legs called forcipules (or toxicognaths). These pincer-like appendages are situated under the first body segment and can puncture skin to inject venom stored in internal glands.

Bite Appearance

Two puncture marks forming an inverted V-shape

Wound Type

Small puncture wounds or blisters

Small Species

May lack strength to pierce human skin

Are Centipede Bites Venomous?

Yes, centipedes deliver venomous bites through their forcipules. The venom is produced in a gland and contains a potent cocktail of bioactive proteins and peptides that can exhibit myotoxic, cardiotoxic, and neurotoxic effects.

Venom Components

Many compounds are still being investigated. Known components include serotonin, histamine, and cardio-depressant toxin-S. Some can cause severe allergic reactions similar to bee stings. In rare cases, venom can cause cardiovascular and neurological effects.

Centipedes primarily use their venom to immobilize smaller prey and defend themselves — not to attack humans.

Centipede Infestation in Your Home?

Professional treatment eliminates centipedes and the pests they hunt, preventing future encounters.

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Symptoms of Centipede Bites

Symptoms vary based on individual sensitivity to venom and centipede size. Most symptoms are localized and transient, lasting less than 48 hours.

Common Symptoms

Localized Pain

Intense burning sensation lasting 30 minutes to 3 days

Swelling & Redness

Around the bite area with possible itchiness

Minor Bleeding

Sometimes extensive and challenging to control

V-Shaped Marks

Two distinct puncture marks indicating venom injection

Severe Symptoms (Seek Medical Attention)

Systemic Reactions

Headache, anxiety, heart palpitations, fever, chills, nausea

Skin Complications

Hardening, red streaks, infection, potential tissue death

Anaphylaxis

Difficulty breathing, throat swelling, rapid heart rate, hives — requires immediate care

What to Do If Bitten by a Centipede

Treat the bite promptly to manage symptoms and prevent complications. While bites cause discomfort, they usually aren't life-threatening. There is no specific antidote for centipede venom — treatment is supportive.

Clean the Wound

Irrigate to reduce infection risk. Gently wash with soap and warm water.

Apply Heat

Hot water or compresses help denature the venom. Note: some patients report increased pain with heat.

Use Cold Compresses

Ice packs reduce swelling and pain by elevating pain threshold and preventing tissue edema.

Medicate If Needed

OTC antihistamines, anti-inflammatories, anesthetics. Topical antibiotics may help prevent infection.

Consider Tetanus

If not vaccinated within 5 years, a tetanus shot may be advised.

Monitor Symptoms

Seek medical attention if severe, not improving within days, or showing allergic reaction signs.

Risks and Complications

Centipede bites carry some risk of complications, primarily from infection or allergic reactions. In rare instances, more severe complications may occur.

Infection

If not properly cleaned, the bite may become infected. Signs include worsening symptoms, fever, red streaks, or foul odor. Antibiotics may be prescribed.

Allergic Reactions

Symptoms may include intense itching, dizziness, hives, or rash. Those with known insect allergies or small children may experience more severe reactions.

Tetanus Risk

Like any puncture wound, centipede bites carry tetanus risk. Keep vaccinations up to date.

Rare But Serious Complications

Cellulitis/Abscess

Skin infections from wound

Local Necrosis

Tissue death around bite

Myocardial Ischemia

Reduced heart blood flow

Anaphylaxis

Life-threatening allergic reaction

When to See a Doctor

While most bites can be managed at home, certain circumstances require medical attention — especially for those with pre-existing health conditions, small children, or signs of infection or allergic reaction.

Seek Immediate Medical Care If:

Fever — temperature of 100.4°F or higher
Signs of infection — red streaks, unusual warmth, bleeding, foul discharge
Allergic reaction — wheezing, difficulty breathing, dizziness, fainting
No improvement — condition worsens or doesn't improve after 48 hours

Outlook After a Centipede Bite

Generally Favorable Prognosis

The outlook following a centipede bite is generally favorable. While bites may cause localized pain, redness, and swelling, symptoms usually subside within a few hours to days. Even rare severe allergic reactions have good prognosis with swift medical attention.

Individuals with pre-existing conditions like diabetes might experience more severe skin reactions and higher infection risk. Those who've experienced anaphylaxis may be prescribed an epinephrine auto-injector. Overall, severe complications are rare and pain management is typically achieved effectively with appropriate treatments.

Contact EcoGuard for Centipede Problems

While most centipede bites can be treated at home, it's crucial to prevent such situations from happening in the first place. If you're dealing with a centipede infestation, don't wait until it becomes a bigger problem. Our team of skilled professionals is dedicated to providing safe and effective pest control solutions, ensuring a pest-free environment for you and your family.

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Centipede Bite FAQs

Are centipedes poisonous to humans?

Yes, centipedes are venomous to humans although the potency varies across different species. The venom from most common household centipedes is usually not strong enough to cause serious harm to humans.

How poisonous is a centipede sting?

The degree of venom toxicity can range from mild to significant depending on the species. However, in most cases the sting from a centipede is not lethal to humans but can cause severe pain and discomfort.

What happens if you get bitten by a centipede?

You may experience symptoms such as sharp, localized pain, swelling, redness, and in rare cases, more serious systemic reactions. It's important to clean the bite area and apply a cold pack to alleviate the swelling and pain.

How bad is a house centipede bite?

A house centipede bite isn't dangerous but can still be painful and uncomfortable due to the venom injected. Most people experience symptoms such as pain, swelling, and redness which usually subsides within a few hours to a couple of days.

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