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umbilication

Formation of a depression at the apex of a papule, vesicle or pustule. Etiology: - umbilicated papules or nodules may occur with molluscum contagiosum - umbilicated hyperkeratotic papules or nodules may occur with reactive perforating collagenosis - umbilicated papules 1-3 mm in diameter with telangiectasia may occur with sebaceous hyperplasia - pruritic, umbilicated, erythematous vesicles with erosion & crusting may occur with eczema herpeticum

References

  1. Stedman's Medical Dictionary 27th ed, Williams & Wilkins, Baltimore, 1999.
  2. Grim L 12 Rashes You Need to Know: Common Dermatologic Diagnoses Medscape. Feb 10, 2021 https://reference.medscape.com/slideshow/skin-rashes-6004772