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Multiple minute digitate hyperkeratosis.

L Balus1, P Donati, A Amantea

  • 1San Gallicano Dermatologic Institute, Rome, Italy.

Journal of the American Academy of Dermatology
|February 1, 1988
PubMed
Summary
This summary is machine-generated.

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Multiple minute digitate hyperkeratosis is a rare genetic skin condition characterized by numerous small, spiked lesions. This case highlights its familial occurrence and distinctive histological findings.

Area of Science:

  • Dermatology
  • Genetics
  • Histopathology

Background:

  • Multiple minute digitate hyperkeratosis (MMDH) is a rare genodermatosis.
  • Characterized by widespread, small, spiked keratotic papules and plaques.
  • Often presents with a familial pattern across generations.

Observation:

  • A patient presented with hundreds of keratotic lesions on the trunk and arms.
  • Lesions varied from tiny and spiked to larger, flat papules.
  • Affected individuals were noted across multiple family generations.

Findings:

  • Histopathology revealed focal compact hyperorthokeratosis with minimal dermal changes.
  • Ultrastructural analysis showed smaller-than-normal keratohyalin granules.
  • The keratinization pattern was consistent with a normal variant, with Odland bodies present.

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Implications:

  • This case contributes to the understanding of MMDH's clinical and histological spectrum.
  • Highlights the importance of family history in diagnosing genodermatoses.
  • Further research may elucidate the specific genetic mutations underlying MMDH.