wikipedia has an article on it. it is an antibiotic medication. not a condition.
http://en.wikipedia.org/wiki/Metronidazole
anti-infective medication used mainly in the treatment of infections caused by susceptible organisms, particularly anaerobic bacteria and protozoa . It is marketed by Pfizer under the trade name Flagyl in the US, s also used as a gel preparation in the treatment of the dermatological conditions such as rosacea (Rozex and MetroGel by Galderma ) and fungating tumours
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