The effects range from a small itch to large-scale rashes. Interestingly, some people appear to be immune to the effects of poison oak. The cluster of three oak-like leaves are a hint you may be near ...

Poison oak has leaves that grow in groups of three, have wavy edges, and fuzzy undersides. A poison oak rash is usually pink or red and will usually appear within 24 hours. You can treat poison ...

tear-shaped leaves. It can grow as a climbing or low-spreading vine that sprawls through grass. Poison oak: The plant has leaves that resemble oak leaves and grows as a vine or shrub. The plant ...