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Epidemiology Change in physiological status or in disease occurrence that conforms to a regular seasonal pattern
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


Occurring regularly at certain times of the year, e.g., in the summer or winter (but not usually during both). Seasonal allergies follow the predictable pattern of occurring when pollen circulates in the air. Seasonal infections, like influenza, are most common in the winter.
seasonality (sē″zŏ-nal′ĭt-ē)
Medical Dictionary, © 2009 Farlex and Partners

Patient discussion about seasonality

Q. Regarding Seasonal Nasal allergy. My father is suffering from seasonal nasal allergies. He took a 24-hour loratadine pill, 5 hours ago. His nose is still running just like it was. Can I take a benedryl, or is it dangerous to mix loratadine and benedryl? What else can I do to stop my nose?

A. except well known drug interactions- most Dr. check it out with a computer program they have. you need to ask a Dr. or a pharmacist about it. but i can tell you that if you wait 4 times the T1/2 - that is enough to consider the drug out of the system.

Q. i suffer of seasonal allergy , besides pills , are they alternative methods to treat seasonal allergy?

A. Here are a few sites that may be useful:
Hope this helps.

Q. what is the most natural way to treat seasonal Allergy and to ease symptoms of between seasons?

A. here is a web page with info about seasonal Allergy various treatments:

i hope it's what you are looking for.

More discussions about seasonality
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References in periodicals archive ?
We also suggest a new methodology for dealing with multiple seasonalities that may prove useful for future econometric analysis of electricity prices.
They employ dummy variables and sinusoids to deal with the seasonalities and an AR(1) for the autocorrelation structure.
They model seasonalities using sinusoids and weekday dummies.
On the basis of this examination it is invariably clear that the model applied in the second step of the analysis should integrate multiple seasonalities and reflect phenomena such as short (sometimes long) memory, mean reversion, high price-dependent volatility and leptokurtosis.
This paper contributes to the evolution of the literature in the field of stock seasonalities by documenting a price pressure effect in November and a significant increase in the January effect after the passage of Tax Reform Act in 1986.
A non-tax explanation is therefore more likely to be consistent with any seasonalities observed before 1965.
(1995) found evidence of January and April seasonalities in the logarithmic changes in the FTA index levels.
A re-examination of international seasonalities. Review of Financial Economics 5, 1-17.
dollar.(3) The existence of seasonalities with the dividend reinvested reinforces an estimation that superior returns do exist as capital gains and dividend gains are included in the analysis.
The results from the two-way ANOVA indicate fourteen significant seasonalities (column 3) using the local currency as the numeraire.
Only four tests report significant seasonalities with the two-way ANOVA and six report seasonalities with the Friedman Rank Sums test.
However, for these seasonalities to be a gain in wealth, they must exist in excess of any compensation for risk.