Chigger and centipede bites and other outdoor bites
Wear long sleeves and pants in tall grass; for centipede bites, rinse first, then use ice or warm water for pain — see a doctor and mention your outdoor activity if you develop a fever or rash
01 What to do now
- 01
Chigger bites
A painless black scab appears at the bite site; within about 1–3 weeks (commonly 9–12 days), fever, headache, and swollen lymph nodes may develop, with a rash possibly appearing about a week after the fever starts; when you see a doctor, proactively mention whether you've been in tall grass or mountain areas — this is the most important clue for diagnosis
- 02
Centipede bites
Rinse the wound with clean water first; you can disinfect with alcohol. For pain, use ice (10 minutes on, 5 minutes off, repeated) or soak the area in warm (not scalding) water — studies show similar pain relief; don't apply home remedies. If you're prone to allergies, watch for anaphylactic shock and go to the ER promptly if concerned
02 Common myths
Putting toothpaste, soy sauce, or other home remedies on a centipede bite: there's no evidence they work, and they can dirty the wound — just rinse it and use ice or a warm-water soak
Treating chigger disease symptoms as an ordinary cold: delaying treatment carries a fatal risk — proactively tell your doctor about your outdoor activity history
03 Sources
- Taiwan CDC — Introduction to scrub typhus (chigger disease) Official source
- UHO Health — ER doctor explains 4 emergency steps for centipede bites Professional / media source
- Clinical Toxicology — Randomized trial in Taiwan comparing ice packs, hot water immersion, and analgesic injection for centipede bites Professional / media source