Stephen J. Schueler, M.D.

Overview Incidence Risk Factors Symptoms trigger factors Evaluation Treatment questions for doctor specialist Home Care warning signs Outlook Underlying Cause Anatomy

Perioral Dermatitis Anatomy

To better understand acne rosacea, it helps to understand the anatomy of the skin.

The skin contains three main layers:

  • Epidermis:
    • The superficial layer that makes up the surface of the skin
    • It is composed of skin cells and can be divided into 5 layers based on cell type.
    • The top layer of the epidermis, the stratum corneum, is made of dead, flat skin cells that shed about every 2 weeks.
    • The thickness of the epidermis varies, according to location: it is very thick over the soles of the feet, and very thin over the ears.
  • Dermis:
    • Lies beneath the epidermis
    • Also varies in thickness depending on the location of the skin. It is .3 mm on the eyelid and 3.0 mm on the back.
    • The dermis is composed of 2 layers that contain a connective tissue called collagen
    • The dermis contains blood vessels, nerves, sweat glands, and hair follicles.
    • The number of structures in the dermis varies, according to location.
    • The dermis under the arms contains more sweat glands and hair follicles than the dermis on the back.
  • Subcutaneous layer:
    • Mainly fat and connective tissue.
    • Contains blood vessels and nerves.

Last Updated: Nov 9, 2010 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
Copyright DSHI Systems, Inc. Powered by: FreeMD - Your Virtual Doctor

PubMed Perioral Dermatitis References
  1. Del Rosso JQ. Adjunctive skin care in the management of rosacea: cleansers, moisturizers, and photoprotectants. Cutis. 2005 Mar;75(3 Suppl):17-21. [15810806]
  2. Powell FC. Clinical practice. Rosacea. N Engl J Med. 2005 Feb 24;352(8):793-803. [15728812]
  3. van Zuuren E, Graber M, Hollis S, Chaudhry M, Gupta A, Gover M. Interventions for rosacea. Cochrane Database Syst Rev. 2005 Jul 20;(3):CD003262. [16034895]
  4. Wolf JE Jr. Present and future rosacea therapy. Cutis. 2005 Mar;75(3 Suppl):4-7. [15810803]
FreeMD is provided for information purposes only and should not be used as a substitute for evaluation and treatment by a physician. Please review our terms of use.