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Cultivated plants causing allergy |
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Pollens of many plants planted in public or private gardens due for beautification may cause pollinosis in predisposed individuals. Statistics point out that the prevalence ofsensitization to ``new'''' tree pollens (Betulaceae,Corylaceae, Cupressaceae, Taxodiaceae, and otherfamilies) is alarmingly shooting up in Italy lately. Allergenic plants are often imported from foreign countries. It is, therefore, vital that low-allergenic species be identified so that pollensensitizations can be prevented from affecting many people.
Southern California abounds in cultivated junipers. Numerous varieties of J. chinensis L. (Chinese juniper) and J. communis L. (Common juniper) are cultivated. These native junipers are notorious for causing contact dermatitis, inhalant allergy and irritation of skin to some while its pollens result in hay fever and asthma in many others,not only in USA but throughout the world. As different varieties of pollen bloom at different times of year, the species provide a perennial source of air-borne pollen. In some areas of the U.S., during the early spring to fall months of Juniper bloom there is so much pollen in the air that it has been estimated that each person inhales hundreds of Juniper pollen grains with every breath.
Decorative plants of the composites families can induce immediate occupational conjunctivitis, rhinitis, asthma and urticaria. Other cultivated plants like Castor bean and red clove also result in allergies. However, red clove has a more pronounced effect on horses than on humans. Mulberry, hemp sativa and cannabis are also known to cause allergies with their pollens. The symptoms of allergies from hemp and cannabis are less dramatic than those caused by mulberry. The places where wheat is cultivated, allergy is caused by the the small particles of wheat which are carried away by the wind. Fungus from common grass (Ustilago Cynodon dactylon) affects some, while American grass has also been known to cause allergy in some countries. Examples of commonplace decorative plant families causing occupational allergic diseases are Compositae (Asteraceae), Liliaceae, Alstromeriaceae, Amaryllidaceae and Caryophyllaceae.
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Many other plants, e.g. freesia, gypsophila, mimosa, dahlia, geranium and hydrangea, can provoke allergic reaction. Chrysanthemums, gerberas, gaillardia, marguerite and elecampane (Inula helenium). Sunflower (Helianthus annuus) are known to cause delayed allergic dermatitis. Chrysanthemums are particularly known for causing respiratory problems, including asthma. Cultivated decorative plants belonging to the families of arnica, feverfew, yarrow and tansy also lead to allergies. Plants of the Liliaceae and Alstromeriaceae families, such as tulips and alstroemerias cause eye and respiratory allergies. Narcissi and hyacinths might cause skin rashes.
Stay with allergieshub.com to gain insight into the types of allergies, including plant allergies.
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