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- Scabies facts
- What is scabies? What causes a scabies infestation?
- How do you get scabies?
- Can you catch scabies from a dog or cat?
- What are risk factors for scabies?
- What does scabies rash look like? What are scabies symptoms and signs?
- What does scabies feel like?
- How is a scabies infestation diagnosed?
- What are treatment options and home remedies for a scabies infestation?
- What are treatment options and home remedies for a scabies infestation? (Part 2)
- What are treatment options and home remedies for a scabies infestation? (Part 3)
- Are cases of scabies often misdiagnosed?
- What are possible complications of scabies?
- Can a scabies infestation be prevented?
- In what special situations can scabies be more easily spread?
- What is Norwegian or crusted scabies?
- What is the prognosis (outlook) for scabies?
What is Norwegian or crusted scabies?
Norwegian scabies, or crusted scabies, is a severe form of scabies first described in Norway. Crusted scabies almost always affects people with a compromised immune system and is observed most frequently in the elderly, those who are mentally or physically disabled, and in patients with AIDS, lymphoma, or other conditions that decrease the effectiveness of the immune response. Due to the poor function of the immune system, an individual may become infested with hundreds of thousands of the mites. The lesions of this distinctive form of scabies are extensive and may spread all over the body. The elbows, knees, palms, scalp, and soles of the feet are most commonly the original sites of involvement, and the scaly areas eventually take on a wart-like appearance. The fingernails can be thickened and discolored. Interestingly, itching may be minimal or absent in this form of scabies.
A particular danger of crusted scabies is that these lesions often predispose to the development of secondary infections, as with Staphylococcus or Streptococcus bacteria.