If a centipede bites you, it usually causes intense local pain, redness, and swelling at the bite site, but serious complications are rare for most healthy adults. In uncommon cases, especially with larger species or in allergic individuals, the venom can trigger more serious reactions like infection, tissue damage, or even anaphylaxis, which is a medical emergency.

What the bite feels and looks like

Most people notice symptoms within seconds to minutes of the bite.

  • Sudden, sharp, burning pain at the bite site (can be very strong, especially with big centipedes).
  • Redness and swelling around the puncture marks.
  • Possible mild bleeding from the fang (forcipule) punctures.
  • Itching, burning, or tingling, sometimes numbness or “pins and needles” around the area.
  • Throbbing pain that can last hours to a couple of days.

In some cases, especially if the skin breaks down or gets infected:

  • Hardening of the skin or blistering around the bite.
  • Local infection or cellulitis (the area becomes more red, hot, swollen, and painful over time).
  • Rarely, tissue death (necrosis) around the bite site.

Most bites from small house centipedes do not progress beyond painful redness and swelling and heal without lasting issues.

What the venom can do in your body

Centipede venom is a mix of different chemicals and proteins.

  • It often contains histamine, serotonin, and other toxins that cause pain, inflammation, and blood vessel effects.
  • Because of this mix, the bite can sometimes trigger allergic reactions or affect the heart and nervous system in sensitive people.

Known possible systemic (whole‑body) effects include:

  • Headache, fatigue, anxiety, feeling generally unwell.
  • Fever, chills, nausea, or vomiting.
  • Muscle damage in severe cases (rhabdomyolysis), with dark urine and muscle pain, though this is rare.
  • Cardiovascular signs like low blood pressure, palpitations, chest discomfort, and, rarely, heart ischemia (reduced blood flow to the heart).

These more serious systemic effects are unusual and are mostly reported in case reports or with larger, more venomous centipede species.

Allergic reactions and emergencies

The biggest immediate danger is a severe allergic reaction (anaphylaxis), which can happen within minutes of a bite in susceptible people.

Warning signs of a serious allergic reaction include:

  • Swelling of the face, lips, tongue, or throat.
  • Trouble breathing, wheezing, or tightness in the chest.
  • Widespread hives or rash beyond the bite area.
  • Dizziness, fainting, confusion, or loss of consciousness.
  • Very low blood pressure (feeling like you might pass out).

Anyone with these symptoms should seek emergency care immediately; prompt treatment (like epinephrine) usually prevents long‑term problems.

Children, older adults, and people with allergies to stinging insects (like bees and wasps) may be at higher risk for severe reactions.

How dangerous is it, really?

For context, centipede bites are rarely life‑threatening.

  • Most reported bites cause mild to moderate symptoms that resolve in hours to a few days.
  • Anaphylaxis and severe complications are very rare, even with large centipedes.
  • Only a handful of possible fatalities from centipede bites have been documented worldwide in nearly a century, and even those are few and debated.

Still, bites can be among the more painful arthropod stings people experience, especially from large tropical or desert centipedes.

What to do if you’re bitten

Basic first aid (this is general information, not a substitute for medical care):

  1. Get to safety
    • Move away from the centipede so you don’t get bitten again.
  1. Clean the wound
    • Wash the area gently with soap and water to reduce infection risk.
  1. Control pain and swelling
    • Apply a cold pack wrapped in cloth for 10–15 minutes at a time to reduce pain and swelling.
 * Keep the bitten limb elevated if possible.

 * Over‑the‑counter pain relievers or antihistamines are sometimes used, but you should follow local medical advice or talk with a professional before taking anything.
  1. Watch for signs of infection or worsening
    • See a doctor if pain is severe, swelling spreads quickly, or you notice pus, increased redness, or warmth (signs of infection).
  1. Seek emergency help immediately
    • If there is any sign of difficulty breathing, facial or throat swelling, chest pain, confusion, or fainting, treat it as an emergency.

Doctors may also check your tetanus immunization status because any puncture wound can potentially introduce tetanus.

Short SEO‑style wrap‑up (for your “Quick Scoop”)

  • “What happens if a centipede bites you?”
    • Usually: intense local pain, redness, and swelling that settle within hours to a couple of days without lasting harm.
* Rarely: serious allergic reactions, infections, muscle breakdown, or heart‑related complications, especially in vulnerable people or with large species.

Information gathered from public forums or data available on the internet and portrayed here.