| |
| | hay fever - Columbia Encyclopedia article about hay fever (via CobWeb/3.1 planetlab1.cs.wisc.edu) (Site not responding. Last check: 2007-10-26) |
 | | hay fever, seasonal allergy allergy, hypersensitive reaction of the body tissues of certain individuals to certain substances that, in similar amounts and circumstances, are innocuous to other persons. |
 | | In addition, many patients with hay fever develop other allergic conditions, e.g., asthma asthma (ăz`mə, ăs`–), chronic inflammatory respiratory disease characterized by periodic attacks of wheezing, shortness of breath, and a tight feeling in the chest. |
 | | In the spring, hay fever may be caused by tree pollens (oak, elm, maple); in summer, by grass pollens, wheat or corn rusts, or fungus spores; in late summer and fall, by ragweed pollen, which is the most common cause. |
| columbia.thefreedictionary.com.cob-web.org:8888 /hay+fever (371 words) |
|