Last Updated: 2023-07-07

Author(s): Anzengruber F., Navarini A.

ICD11: 1G04

Renucci, 1835.


Pruriginous, worldwide infectious disease caused by the parasite Sarcoptes scabiei hominis.

  • Incidence (worldwide): 200-400 million cases annually
  • Prevalence (worldwide): < 1% -40% annually

  • Close physical contact is causing infection.

  • In the area of the body folds (between the toes, elbows), genitals and principally almost on the entire integument, there are erythematous, pruritic, partly urticarial, sometimes vesicular papules and ducts
  • The back, head and neck are usually free
  • The curved, erythematous mite ducts are sometimes visible and can be visualised with ink
  • The pruritus is most pronounced at night
    • In case of first infection: manifestation after 3-6 weeks
    • Reinfection after 24 hours, as patients are already sensitized to the mite faeces antigens

  • Anamnesis: travel anamnesis
  • Clinical image: reflected light microscopy
  • The diagnosis is made clinically. Only the detection of the mite clearly confirms the diagnosis of scabies
  • A deep biopsy is rarely necessary, whereas a really good dermatologist can visualize the mite well with a scratch biopsy and confirm it under the microscope

In the area of the body folds (between the toes, elbows), genital and principally almost on the entire integument

Scabies afflicts patients in the imaginary "circle of Hebra": axillae, elbows, wrists, hands and crotch, this is created by resting the hands on the hips.

  • Persistent postscabial eczema, always prescribe topical class III steroids with antiseptic along with scabicidal therapy
  • Persistent post-scabial papules

Very good with correct diagnosis and treatment not only of the patient but of the relevant group that has physical contact with each other.

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