Table 1.

Summary of the 2020 International Alliance for the Control of Scabies Consensus Criteria for the Diagnosis of Scabies

A. Confirmed scabies

At least one of:

A1: Mites, eggs or faeces on light microscopy of skin samples

A2: Mites, eggs or faeces visualized on an individual using a high‐powered imaging device

A3: Mite visualized on an individual using dermoscopy

B. Clinical scabies

At least one of:

B1: Scabies burrows

B2: Typical lesions affecting male genitalia

B3: Typical lesions in a typical distribution and two history features

C. Suspected scabies

One of:

C1: Typical lesions in a typical distribution and one history feature

C2: Atypical lesions or atypical distribution and two history features

History features

H1: Itch

H2: Positive contact history

Diagnosis can be made at one of the three levels (A, B or C). A diagnosis of clinical or suspected scabies should only be made if other differential diagnoses are considered less likely than scabies.