National parks are areas set aside and protected by the federal government for Americans, and are popular for RVing due to their access to wilderness areas and forests. However, they are also home to some of the most dangerous plants in America.
The most dangerous part of dangerous plants is the sap or oil, which can catch on skin, hair, or fur. Urushiol is the chief offender.
First-aid steps include knowing what poisonous species exist, wearing long pants and long sleeves, and scrubbing the affected area with Tecnu soap to reduce the reaction. Hydrocortisone creams can help speed recovery, and oatmeal baths and calamine lotions can soothe inflammation. Symptoms may include fever, shortness of breath, and rapid heartbeat.