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Related Concept Videos

Changes in Skin Color: Clinical Perspectives01:14

Changes in Skin Color: Clinical Perspectives

The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Pigmentation01:19

Pigmentation

The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
Facial Feedback Hypothesis01:24

Facial Feedback Hypothesis

Charles Darwin proposed that facial expressions are an evolutionary adaptation for communication. He argued that these expressions are not influenced by culture but are universal across species. For example, a snarling expression with exposed teeth signals a threat in many animals, including humans. Darwin also suggested that displaying an emotion can intensify the feeling. Smiling, for example, could enhance one's sense of happiness. This idea laid the foundation for understanding the role of...
Color Vision01:24

Color Vision

Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
Redox Reactions01:27

Redox Reactions

Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...
Redox Reactions01:24

Redox Reactions

Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...

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Related Experiment Video

Updated: May 26, 2026

Enhancement of Facial Rejuvenation Through a Combination of 1565 nm Non-Ablative Fractional Laser with 30% Supramolecular Salicylic Acid
03:47

Enhancement of Facial Rejuvenation Through a Combination of 1565 nm Non-Ablative Fractional Laser with 30% Supramolecular Salicylic Acid

Published on: September 27, 2024

About some red faces.

M-S Doutre1, M Beylot-Barry

  • 1Service de dermatologie, Hôpital du Haut-Lévêque, CHU de Bordeaux, 33604 Pessac cedex, France. marie-sylvie.doutre@chu-bordeaux.fr

Annales De Dermatologie Et De Venereologie
|December 21, 2011
PubMed
Summary
This summary is machine-generated.

Facial erythema, or "red face," requires careful diagnosis considering its origin, symptoms, and potential systemic links. This review discusses various causes and management strategies for facial redness in specific dermatological conditions.

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Area of Science:

  • Dermatology
  • Medical Diagnostics

Background:

  • Facial erythema, termed "red face," is characterized by lesions predominantly on the face.
  • Diagnosis relies on the onset, erythema characteristics, functional signs, and systemic manifestations.

Purpose of the Study:

  • To explore the differential diagnosis and management of facial erythema.
  • To discuss specific cases including atopic patients, photodermatoses, and connective tissue diseases.

Main Methods:

  • Review of clinical data and diagnostic criteria for various causes of facial erythema.
  • Discussion of case observations related to atopic dermatitis, dermatomyositis, polymorphous light eruption, and lupus erythematosus.

Main Results:

  • Facial erythema can stem from diverse origins: infectious, vascular, congenital, acquired, photodermatosis, inflammatory dermatoses, or collagenosis.
  • Management considerations vary significantly based on the underlying etiology and patient's condition.

Conclusions:

  • Accurate diagnosis of facial erythema is crucial for effective management.
  • Understanding the role of factors like ultraviolet radiation and associated conditions is key in diagnosing and treating facial redness.