a severe form of scabies with innumerable mites in thickened stratum corneum; has been linked with cellular immune deficiencies, including AIDS.
crusted scabiesDermatology Severe scabies, seen in institutionalized persons–eg, with Down syndrome or either debilitated or immunosuppressed Pts Clinical Many mites—Sarcoptes scabei var.homini, with a psoriasis-like pachydermia, variably accompanied by thickened nails, generalized hyperpigmentation, eosinophilia, pyoderma, lymphadenopathy. See Seven-year itch.
Widespread scabies involving large areas of the skin, usually found in people with immune-suppressing illnesses, malnutrition, or unhygienic living situations. Crusted scabies is very contagious. Scaling skin from affected persons readily distributes mites to individuals in contact with the patient.