When a case of classic scabies infestation ramps up and the number of mites reaches thousands or even millions, it's classified as crusted scabies. Vast numbers of mites inhabit crusty scabs created ...
Ordinary scabies is treated with permethrin-based creams and shampoos while crusted "Norwegian" scabies is often treated with a combination of permethrin (5%) and oral ivermectin 200 µ/kg.
More needs to be understood regarding ivermectin pharmacokinetics in relation to optimal treatment for both ordinary and crusted scabies. Safety issues regarding the use of ivermectin in children ...