Merck Manual

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Fevers During Pregnancy


Lara A. Friel

, MD, PhD, University of Texas Health Medical School at Houston, McGovern Medical School

Last full review/revision Apr 2020| Content last modified Apr 2020
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A temperature of > 39.5° C (> 103° F) during the 1st trimester increases risk of

Fever late in pregnancy increases risk of

Treatment of fever is directed at the cause, but antipyretics are indicated to decrease maternal temperature. In women with severe hyperthermia, cooling blankets may be used.

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