Creosote Allergy

The creosote bush, also known as chapparral, is an evergreen shrub that is commonly found in southwestern United States and Northern Mexico. Creosote is responsible for causing allergic reactions as well as having toxic effects on humans.

History

• Creosote bush is an intensely aromatic evergreen shrub that is known for taking over rugged range-land in dry climates. In the past, inhabitants of the southwestern U.S. and Northwestern Mexico, such as the Pima Indians, have been known to use creosote bush as a hypoglycemic medicine against diabetes.

Description

• Creosote is an evergreen, balsam-scented shrub that grows 10 feet high. The evergreen produces small leaves, around 1/3 inch in length. The leaves are fleshy or leathery, spine-like and resinous. The tree also produces yellow flowers that are generally 1/4 inch long. These flowers are responsible for releasing the pollen that causes allergic reactions.

The Allergy

• Creosote bush is classified as a mild allergen causing watery/itchy eyes, runny nose and sneezing. Its active allergy season is during February to August in the south central U.S. and from March to May in the southwestern U.S. This bush is generally insect-pollinated but airborne pollen is not uncommon.

Active Principles

• Creosote bush contains the following active principles: amino acids, flavonoids, resins, volatile oils, triterpenes, saponins and nor-dihydro guayaretic acid along with other lignans.

Warning

• Creosote bush is not only known for its allergic reactions, but has been recorded being toxic to some humans when using for medication. Any use of this plant should be recommended and monitored by a medical professional.