Norwegian scabies is a severe form of the scabies infestation. It most commonly affects the elderly, people taking steroid medications, and people with certain conditions (such as Down syndrome or leukemia). Symptoms can look similar to psoriasis and include numerous blisters, a thick crust over the skin, thickened and deformed nails, and slight itching.
Scabies is an infestation of the skin with the microscopic mite Sarcoptes scabiei. Norwegian scabies is a severe form of this infestation.
Norwegian scabies is caused by an infestation with the scabies mite (Sarcoptes scabiei). It is spread by direct, prolonged, skin-to-skin contact with a person already infested with scabies. Infestation may also occur by sharing clothing, towels, and bedding.
(Click Scabies Causes for more information.)
Norwegian scabies is more common in the elderly, people taking steroid medicines, or people with the following:
- Brain or spinal cord conditions
- Mental conditions
- Senile dementia
- Down syndrome
- Weakened immune system conditions (such as HIV or AIDS).
This type of infestation can cause symptoms that look similar to psoriasis and include:
- Numerous blisters
- Thick crust over the skin
- Thickened, deformed nails
- Slight itching.