If data shows two or three symptoms have worsened over three days, patients are classed as having an exacerbation.

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They are often disappointed that instead of the dawn of a new politics, there has been a exacerbation of politics as usual.

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In parallel, the trends being observed in the different variables of the hydrologic cycle evidence the exacerbation of such conditions (Sixth Water Dialogue, 2006).

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It is true that Lariam may very well have had an impact on the precipitation and exacerbation of Mr. Mezvinsky's pre-existing, serious mental illness.

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These are voluntary reports from health care providers and consumers linking DMAA use to seizures, arrhythmias, heart attacks, strokes, panic attacks, and deaths, along with exacerbation of psychiatric conditions.

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He enriched the oxygen or the carbon dioxide in the air breathed by experimental subjects and found not a hint of suppression or exacerbation of yawning compared with control subjects breathing normal air.

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At the time, John Lewis said if the square was pedestrianised it would "inevitably lead to an exacerbation of the congestion" and be a "major problem for customers", but it was broadly in favour of the plans.

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One area of potential exacerbation: immigration.

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