ragweed


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ragweed

(răg′wēd′)
n.
1. Any of various weeds of the genus Ambrosia of the composite family, having small, greenish, unisexual flower heads and producing abundant pollen that is one of the chief causes of hay fever.
2. Chiefly British Ragwort.

ragweed

[rag′wēd]
Etymology: ME, ragge, rag + AS, weod, herb, grass, weed
any of various species of plants of the genus Ambrosia whose pollen can cause hay fever.

ragweed

A plant of the family Compositae, the pollen from which is highly allergenic and the most common cause of allergic rhinitis.
 
Diagnosis
Bronchial provocation testing, in which pollen is inhaled through a dosimeter.
 
Management
Avoidance of pollens by staying indoors; use of cromolyn, antihistamines, sympathomimetics, theophylline and corticosteroids.

ragweed

Ambrosia artemisiifolia Allergy medicine Any of the weedy composite herbs of family Compositae, the pollen from which is highly allergenic Diagnosis Bronchial provocation testing, in which pollen is inhaled through a dosimeter Management Avoid pollen, stay indoors, cromolyn, antihistamines, sympathomimetics, theophylline, corticosteroids Drug slang A street term for low quality marijuana or heroin

ragweed,

n Latin names:
Ambrosia artemisifolia, Ambrosia trifida. An annual weed that blooms in the fall and is implicated as the primary cause of hay fever.

ragweed

see artemisia, a name sometimes used for senecio but more commonly ambrosia elatir, or Franseria discolor (white ragweed).
References in periodicals archive ?
Ragweed is closely related to another native, asters, and all belong to the sunflower family.
A pooled analysis indirectly compared the treatment effect of SLIT (N=3094 in Timothy grass SLIT tablet trials; N=58 in ragweed SLIT tablet trials) vs pharmacotherapies (montelukast, N=6799; desloratadine, N=445; or mometasone furoate nasal spray, N=2140) for seasonal and perennial AR.
Those results suggested that as ragweed plants produce more pollen, sensitization rates are likely to increase in areas where the plant is already endemic.
The report reviews key players involved in the therapeutics development for Ragweed Allergy and enlists all their major and minor projects
Treatment is started 12 weeks before the beginning of ragweed pollen season and continued throughout the season.
SLIT for grass allergy will be approved for patients aged 5-65, while SLIT for ragweed will receive an indication for 18- to 65-year-olds.
If the committee, which granted approval for grass allergy tablets in December, also approves the ragweed allergy tablets, the FDA will then have to approve both the grass and ragweed tablets before they can be made available to allergy sufferers.
Children and adults in Central Massachusetts who suffer from fall allergies brought on by pollen exposure -- with ragweed at the top of the list -- have already been suffering itchy eyes and noses for weeks.
About 26% of the population is sensitive to ragweed pollen.
The natural immune health ingredient Wellmune WGP from Biothera was shown to reduce allergy symptoms and improve the quality of life of ragweed allergy sufferers, according to clinical results published in Food Science & Nutrition.
The ragweed indicator is already yielding important information, said Knowlton, an APHA member.