: an antimicrobial agent C12H12N2O2S used especially to treat leprosy and a chronic form of dermatitis

Examples of dapsone in a Sentence

Recent Examples on the Web
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Anti-Inflammatory Antibiotics Certain antibiotics like dapsone have anti-inflammatory properties that can help reduce chronic hives. — Sarah Jividen, Verywell Health, 15 Jan. 2025 The condition is treated using a multi-drug regimen that consists of different combinations of antibiotics, including the drugs dapsone, rifampin, and clofazimine. — Erica Sweeney, Men's Health, 4 Aug. 2023 Instead, your dermatologist might prescribe a topical dapsone for hormonal acne at night. — Madeleine Burry, Health, 30 June 2023 Talk to your dermatologist about topical dapsone cream or oral spironolactone. — Noma Nazish, Forbes, 31 Mar. 2023 One option your dermatologist might prescribe for acne is dapsone gel, such as the brand-name version Aczone. — Sarah Jacoby, SELF, 27 Dec. 2021

Word History

Etymology

diamine + phenyl + sulfone

First Known Use

1952, in the meaning defined above

Time Traveler
The first known use of dapsone was in 1952

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Cite this Entry

“Dapsone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dapsone. Accessed 25 Sep. 2026.

Medical Definition

: an antimicrobial agent C12H12N2O2S taken orally to treat leprosy and dermatitis herpetiformis and topically to treat acne vulgaris

Note: Dapsone is marketed under the trademark Aczone.

called also diaminodiphenyl sulfone

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