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Nikolsky's sign

Nikolsky's sign
SpecialtyDermatology Edit this on Wikidata
Differential diagnosisStevens–Johnson syndrome

Nikolsky's sign is a clinical dermatological sign, named after Pyotr Nikolsky (1858–1940), a Russian physician who trained and worked in the Russian Empire. The sign is present when slight rubbing of the skin results in exfoliation of the outermost layer.[1][2][3][4] A typical test would be to place the eraser of a pencil on the roof of a lesion and spin the pencil in a rolling motion between the thumb and forefinger. If the lesion is opened (i.e., skin sloughed off), then the Nikolsky's sign is present/positive.

Nikolsky's sign is almost always present in Stevens–Johnson syndrome/toxic epidermal necrolysis[5] and staphylococcal scalded skin syndrome, caused by the exfoliative toxin of Staphylococcus aureus.[1] It is also associated with pemphigus vulgaris and pemphigus foliaceus.[6][7] It is useful in differentiating between the diagnosis of pemphigus vulgaris or mucous membrane pemphigoid (where the sign is present) and bullous pemphigoid (where it is absent). The Nikolsky sign is dislodgement of intact superficial epidermis by a shearing force, indicating a plane of cleavage in the skin epidermal-epidermal junctions (e.g., desmosomes). The histological picture involves thinner, weaker attachments of the skin lesion itself to the normal skin – resulting in easier dislodgement.

The formation of new blisters upon slight pressure (direct Nikolsky) and shearing of the skin due to rubbing (indirect Nikolsky) is a sign of pemphigus vulgaris, albeit not a 100% reliable diagnosis.[8] In addition, another physical exam, the Asboe-Hansen signs, must be used to determine the absence of intracellular connections holding epidermal cells together.[9]

See also

References

  1. ^ a b Moss C, Gupta E (September 1998). "The Nikolsky sign in staphylococcal scalded skin syndrome". Arch. Dis. Child. 79 (3): 290. doi:10.1136/adc.79.3.290. PMC 1717681. PMID 9875032.
  2. ^ Schwartz, Robert A (2023-04-24). "Pemphigus Foliaceus: Practice Essentials, Background, Pathophysiology". Medscape Reference. Retrieved 2024-08-08.
  3. ^ Nikolski PV. Materiali K.uchenigu o pemphigus foliaceus [doctoral thesis]. Kiev. 1896.
  4. ^ "MedilinePlus: Nikolsky's sign".
  5. ^ Asz J, Asz D, Moushey R, Seigel J, Mallory SB, Foglia RP (December 2006). "Treatment of toxic epidermal necrolysis in a pediatric patient with a nanocrystalline silver dressing". J. Pediatr. Surg. 41 (12): e9–12. doi:10.1016/j.jpedsurg.2006.08.043. PMID 17161178.
  6. ^ Ma, O. Emergency Medicine Manual. McGraw Hill. 2004.
  7. ^ Beigi, Pooya Khan Mohammad (2018). "Background". A Clinician's Guide to Pemphigus Vulgaris. Springer, Cham. pp. 3–10. doi:10.1007/978-3-319-67759-0_1. ISBN 9783319677583.
  8. ^ Venugopal, Supriya S.; Murrell, Dédée F. (July 2011). "Diagnosis and clinical features of pemphigus vulgaris". Dermatologic Clinics. 29 (3): 373–380, vii. doi:10.1016/j.det.2011.03.004. ISSN 1558-0520. PMID 21605802.
  9. ^ Corwin, J (2016). "Pemphigus vulgaris. In: Ferri FF, editor". Ferri's Clinical Advisor: 945–6.

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