Norwegian (Crusted) Scabies in Children with Cognitive Impairments: Case Studies

Background. Diagnosis of Norwegian (crusted) scabies is complicated by clinical signs of chronic and acute skin diseases. Incorrect diagnosis and consequently irrational management lead to local immune system disorders and excessive reproduction of itch mites. Case description . Children with Prader–Willi syndrome and Down syndrome have shown signs of skin disease. The diagnosis of Norwegian scabies has been established according to dermatoscopy results and analysis of skin scraping from the lesion. External therapy included permethrin 5% lotion and showed positive dynamics of skin lesions over the next 7 days. Conclusion. Norwegian scabies is a difficult disease to diagnose. Particular attention should be given to patient's comorbidities and immune status. Dermatoscopy improves diagnostic accuracy. Topical permethrin therapy can be used as first-line therapy.