<prompt> All of the following are true regarding Norwegian scabies exceptPsoriasiform plaques commonItching is mild or absentLarge number of parasites presentChildren commonly affected  <response>: Norwegian or crusted scabies Seen in immunocompromised patients with lymphoreticular or other malignancies, HIV infection, and those on immunosuppressives and those who are mentally challenged. Clinical presentation:- Thick, scaling, crusted plaques that are found most commonly on the hands, feet, and scalp but may be generalized in distribution Lesions contain thousands of mites. May cause epidemics of ordinary scabies in contacts because of high load of mites. Ref:- Dermatology review by Asra Ali; pg num:- 290 