1
: a sudden outburst or intensification
a flare-up of hostilities
2
: a sudden bursting (as of a smoldering fire) into flame or light
a danger of flare-ups
3
: a sudden appearance or worsening of the symptoms of a disease or condition
an asthmatic flare-up
Synonyms
Examples of flare-up in a Sentence
took medication to prevent a flare-up of her asthma
there's no need for an angry flare-up, as we'll take care of the problem immediately
Recent Examples on the Web
Still, the aftershocks of devastating hurricanes, wars, geopolitical flare-ups, and even US policy actions could present risks to the current disinflationary path, economists say.
—
Alicia Wallace, CNN, 10 Oct. 2024
Additional concerns from reusing towels are skin irritation that can cause eczema or atopic dermatitis flare-ups, fungal infections like athlete’s foot and ringworm, infectious diseases like conjunctivitis (pink eye), norovirus, staph (MRSA), and the spread of E.coli and allergens.
—Mary Marlowe Leverette, Southern Living, 10 Oct. 2024
Follow your treatment plan: Take your asthma medications as directed by your healthcare provider to reduce airway inflammation and prevent flare-ups.
—Lindsay Curtis, Health, 9 Oct. 2024
The Biden-Netanyahu call was already scheduled before the flare-up between Netanyahu and Gallant, according to a source familiar with the issue.
—Barak Ravid, Axios, 9 Oct. 2024
See all Example Sentences for flare-up 
Alicia Wallace, CNN, 10 Oct. 2024
Additional concerns from reusing towels are skin irritation that can cause eczema or atopic dermatitis flare-ups, fungal infections like athlete’s foot and ringworm, infectious diseases like conjunctivitis (pink eye), norovirus, staph (MRSA), and the spread of E.coli and allergens.
—Mary Marlowe Leverette, Southern Living, 10 Oct. 2024
Follow your treatment plan: Take your asthma medications as directed by your healthcare provider to reduce airway inflammation and prevent flare-ups.
—Lindsay Curtis, Health, 9 Oct. 2024
The Biden-Netanyahu call was already scheduled before the flare-up between Netanyahu and Gallant, according to a source familiar with the issue.
—Barak Ravid, Axios, 9 Oct. 2024
See all Example Sentences for flare-up
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'flare-up.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Flare-up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flare-up. Accessed 31 Oct. 2024.
Copy CitationMedical Definition
flare-up
noun
: a sudden appearance or worsening of the symptoms of a disease or condition
an asthmatic flare-up
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