Table 1 Case definitions for scabies using the IACS criteria
From: Prevalence and determinants of impetigo in Ghana: a cross-sectional study
Clinical category | Â | Used in survey |
|---|---|---|
Confirmed scabies | ||
 A1  A2  A3 | Mites, eggs or faeces on light microscopy of skin samples Mites, eggs or faeces visualised on individual using high powered imaging device Mite visualised on individual using dermoscopy | No No No |
Clinical scabies | ||
 *B1  B2  B3 | Presence of burrows Typical lesions affecting male genitalia Typical lesions in a typical distribution and two history features (itch and contact history) | Yes No Yes |
Suspected scabies | ||
 C1  C2 | Typical lesions in a typical distribution and one history feature (itch or contact history) Atypical lesions or atypical distribution and two history features (itch and close contact with an individual who has itch or typical scabies lesions in a typical distribution) | Yes Yes |