Related Experiment Video
Updated: Feb 4, 2026

Using Unfixed, Frozen Tissues to Study Natural Mucin Distribution
Published on: September 21, 2012
Keratosis pilaris rubra with mucin deposition
Anna-Marie Hosking1, Ashley Elsensohn1, Joy Makdisi1
1Department of Dermatology, University of California Irvine, Irvine, California.
Abstract:
Keratosis pilaris (KP) is a benign cutaneous disorder characterized by folliculocentric hyperkeratotic papules most often occurring on the proximal extremities. Erythema is usually limited to perifollicular skin, but when keratosis pilaris presents on a background of confluent erythema, the term keratosis pilaris rubra (KPR) is used. The histological findings associated with KP have not been well described in the literature. Herein, we present a case of a 14-year-old male with a 7-year history of erythema and follicular-based papules over his bilateral cheeks, consistent with KPR. Histological examination revealed abundant mucin, keratotic follicular plugging, and periadnexal lymphocytosis. Our novel finding of abundant dermal mucin expands the histopathologic description of KPR.
More Related Videos
Related Concept Videos
Phase Transitions: Sublimation and Deposition
Role of Microtubules in Cell Wall Deposition
The Fossil Record
Biological Effects of Radiation
What are Biogeochemical Cycles?
States of Water
Water freezes when the intermolecular forces are greater than the kinetic energy. Unlike most other substances, water is less dense in its solid state than in its liquid state. This is because each water molecule can form...

