There are no established standard criteria for making a diagnosis or judging treatment success. Trials used different methods, and in many cases the method was not stated. Treatment success should be given as the percentage of people completely cleared of scabies mites, ova or faecal pellets in skin scrapings viewed under magnification. Clinical success includes elimination of papular and vesicular eruptions and pruritus. Ideally, outcomes should be assessed 28 days after the start of treatment. This allows lesions to heal. If treatment fails, eggs hatch within 3 days and emerging mites become mature 9-10 days later.

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