Scabies: Confirmed, Clinical or Suspected, and Ivermectin Mass Treatment (WHO 2025)
Classifies scabies by the 2020 IACS criteria (WHO 2025).
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Lesions
- Typical lesions in a typical distribution
- Itch
- Yes
- A contact with itch
- Yes
- Other diagnoses less likely than scabies
- Yes
- Burrows
- No
- Weight in kg
- 40
- Pregnant
- No
- Gave birth in the last week
- No
- On warfarin
- No
- Severely ill
- No
Result: Clinical scabies (level B): typical lesions in a typical distribution with itch and a contact.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Mites, eggs or feces seen (microscopy, imaging or dermoscopy)
- Burrows
- Typical lesions on the male genitals
- Lesions
- Itch
- A contact with itch
- Other diagnoses less likely than scabies
- Community prevalence, % (optional)
- Weight in kg (for ivermectin)
- Pregnant
The other 3 fields
- Gave birth in the last week
- On warfarin
- Severely ill
How this is calculated
Citation
WHO. Control of scabies: a guide for national programme managers. Geneva: WHO; 2025. Box 1 (2020 IACS criteria), section 2.3.1.2, MDA thresholds and Box 7 (treatment). Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.