Table 2. Clinical grading scale to guide the management of crusted scabies³¹.

A: Distribution and extent of crusting
1.  Wrists, web spaces, feet only (<10% total body surface area [TBSA])     2.  Above plus forearms, lower legs, buttocks, trunk, or 10–30% TBSA     3.  Above plus scalp or >30% TBSA
B: Crusting/Shedding
1.  Mild crusting (<5 mm depth of crust), minimal skin shedding     2.  Moderate 5–10 mm crusting, moderate skin shedding     3.  Severe >10 mm profuse skin shedding
C: Past Episodes
1.  Never had it before     2.  1–3 prior hospitalisations for crusted scabies or depigmentation of elbows/knees     3.  >4 hospitalisations for the above plus legs/back or skin thickening
D: Skin Condition
1.  No cracking or pyoderma     2.  Multiple pustules and/or weeping sores and/or skin cracking     3.  Deep skin cracking with bleeding, widespread purulent exudates
Grade 1: score 4–6 Grade 2: score 7–9 Grade 3: score 10–12	3 doses of ivermectin 200 μg/kg – day 0, 1, 7 5 doses – day 0, 1, 7, 8, 14 7 doses – day 0, 1, 7, 8, 14, 21, 28
All patients also treated with benzyl benzoate alternating with keratolytic cream

This table was adapted from Davis JS et al.³¹ under the terms of the Creative Commons Attribution 4.0 license (CC-BY 4.0).