Like its cousin Florida Poisonwood (Metopium toxiferum), it produces urushiol in its bark, which can cause contact dermititis on one's skin when touched; therefore live trees and fresh cut logs should be handled carefully.
Pacific poison oak skin contact first causes itching; then evolves into dermatitus with inflammation, colorless bumps, severe itching, and blistering.
Contact | Contact (1997 film) | Full Contact | Contact (musical) | Contact 94 | Urushiol-induced contact dermatitis | Contact breaker | urushiol | ''The Ideon: A Contact'' and ''The Ideon: Be Invoked'' | Star Trek: First Contact | Seborrhoeic dermatitis | Phoenix Contact | NEMA contact ratings | Lacquer dermatitis | Irritant diaper dermatitis | Induced seismicity | Induced gravity | Halo: Contact Harvest | Full contact | Eye contact | dermatitis herpetiformis | Contact sport | Contact, Nevada | Contact Energy | Colonization: Second Contact | Child contact centre | Aspirin-induced asthma | A picture from the report released by the Mount Vernon City School District of the marks left on the child's arm after contact with the Tesla coil | 3-2-1 Contact |
Ginkgo biloba and cashew, plants containing chemicals closely related to urushiol.