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Related Concept Videos

Skin Diseases and Disorders01:23

Skin Diseases and Disorders

Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
The Colloidal State01:29

The Colloidal State

The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called the...
Colloidal precipitates01:09

Colloidal precipitates

The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
Colloids and Suspensions01:17

Colloids and Suspensions

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...
Rocky Mountain Spotted Fever01:26

Rocky Mountain Spotted Fever

Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
Cytomegalovirus Disease01:27

Cytomegalovirus Disease

Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...

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Related Experiment Video

Updated: Jul 3, 2026

Technique of Conjunctival Biopsy and Direct Immunofluorescence for Diagnosing Mucous Membrane Pemphigoid
05:05

Technique of Conjunctival Biopsy and Direct Immunofluorescence for Diagnosing Mucous Membrane Pemphigoid

Published on: June 17, 2025

Colloid milium: a rare cutaneous deposition disease.

Simeen Ber Rahman1, Arfan Ul Bari, Nadeem Mumtaz

  • 1Department of Dermatology, Military Hospital, Rawalpindi, Pakistan.

JPMA. the Journal of the Pakistan Medical Association
|July 29, 2008
PubMed
Summary

Colloid milium is a rare skin condition causing small, translucent bumps on sun-exposed skin. This case report details adult-type colloid milium treatment with Intense Pulsed Light (IPL) laser after dermabrasion proved ineffective.

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Last Updated: Jul 3, 2026

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Area of Science:

  • Dermatology
  • Pathology

Background:

  • Colloid milium is a rare degenerative skin condition characterized by translucent, yellowish-brown papular nodules or plaques.
  • It typically affects sun-exposed areas and presents in adult and juvenile forms.

Observation:

  • A case of adult-type colloid milium in a 60-year-old female patient is presented.
  • Clinical and histological findings were unequivocally diagnostic of the condition.

Findings:

  • The patient initially underwent dermabrasion with unsatisfactory results.
  • Intense Pulsed Light (IPL) laser treatment was subsequently administered.

Implications:

  • This case highlights IPL laser as a potential treatment modality for adult-type colloid milium.
  • Further research may explore the efficacy and optimal parameters of IPL for this rare condition.