Caterpillars
Key points
- Caterpillars (long, fuzzy, segmented insects) are unable to pierce the skin with their bite.
- The objective is to remove irritating caterpillar hairs.
- See Poison Control Centers for telephone numbers and addresses.
- The outcome is generally very good, and death is exceedingly rare.
Definition
Caterpillars (long, fuzzy, segmented insects) are unable to pierce the skin with their bite. However, their hairs may become embedded in the skin or eyes, causing symptoms confined to the area of the penetration.
Some caterpillar hairs can be released into the air, where they can be inhaled causing respiratory irritation. Eating caterpillars may cause an upset stomach.
Symptoms
Body as a whole:
- Swelling
- Pain
- Anaphylaxis (rare)
Skin:
- Rash
- Redness
- Itching
- Hives
- Blisters
Eyes:
- Pain
- Redness
- Tearing
Respiratory:
- Rhinitis
- Cough
- Wheezing
- Shortness of breath
Gastrointestinal:
- Vomiting, if caterpillar or caterpillar hairs are eaten
Home Treatment
The objective is to remove irritating caterpillar hairs. On skin, apply adhesive tape (such as duct or masking tape) to the site, then pull off. Repeat as needed until all hairs are removed. Follow with calamine lotion, and apply ice to the affected area.
Eyes should be flushed immediately with plenty of water before seeking professional medical care. If respiratory symptoms develop following inhalation of caterpillar hairs, administer beta-agonist inhalers or antihistamines (if available), then seek professional medical care.
Before Calling Emergency
Before calling the emergency number determine the following:
- Patient's age, weight, and condition
- Identity of the caterpillar, if possible
- Time of the incident
Poison Control, or a local emergency number
Written and revised by
Andrey Nailor, M.D.
Our doctors write and review articles for accuracy and keep them up to date.
health.am provides general information, not medical advice. Always consult a qualified health professional about your own health.