The skin is the outer layout of body covering. Skin symptoms include rash, skin itch, skin injury, bruising, skin redness, cold skin, and numerous other symptoms. Skin disorders are numerous, including dermatitis, sunburn, moles, freckles, birthmarks, skin cancer, and many other disorders. Skin disorders can be characterized by particular skin reasons, as in scalp disorders. Read more about: Skin Symptoms, Skin Disorders

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Your skin is your body's largest organ. It covers and protects your body. Your skin

  • Holds body fluids in, preventing dehydration
  • Keeps harmful microbes out, preventing infections
  • Helps you feel things like heat, cold, and pain
  • Keeps your body temperature even
  • Makes vitamin D when the sun shines on it

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

Source: MedLinePlus (NIH)1

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What you know about your skin

Your skin is the organ that comes into contact with the rest of the world. It holds body fluids in, preventing dehydration (dee-hahy-DREY-shun), and keeps harmful microbes (MYE-krobs) out—without it, we would get infections. Your skin is full of nerve endings that help you feel things like heat, cold, and pain. If you couldn’t feel these things, you could get badly hurt and not even know it!

Source: NIAMS (NIH)2

Introduction: Skin

Skin is actually your body’s largest organ by size. Your skin helps keep your body temperature even. If you get too hot, blood vessels near the surface of the skin, called capillaries (CAP-uh-ler-ees), enlarge to let the warm blood cool down.

Your skin also makes vitamin D (VYE-tuh-min D) when the sun shines on it. Vitamin D is important for the health of your bones and other parts of your body.

Source: NIAMS (NIH)3

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Skin: The outer covering of the body that protects it from the environment. It is composed of the Dermis and the Epidermis.4

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Skin: An organ that constitutes the external surface of the body. It consists of the epidermis, dermis, and skin appendages.5

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Skin adverse event: A hair, skin, and nail adverse event that occurs in skin.6

Anatomical Information about Skin

Anatomy and Functions of the Skin

The skin is the body’s largest organ, accounting for more than 10 percent of body mass. The skin provides a number of functions including:

  • protection,
  • water preservation,
  • shock absorption,
  • tactile sensation,
  • calorie reservation,
  • vitamin D synthesis,
  • temperature control, and
  • lubrication and waterproofing.

Source: CDC NIOSH7


Types may include:8

Types of Skin:

  • Ear Skin
  • Flexural Skin
  • Glabrous Skin
  • Head Skin
  • Neck Skin
  • Non-Glabrous Skin
  • Peristomal Skin
  • Prepuce
  • Scrotum
  • Skin Of The Axilla
  • Skin of the Extremity
  • Skin of the Face
  • Skin of the Lower Limb and Hip
  • Skin of the Scalp and Neck
  • Skin of the Trunk
  • Skin of the Upper Limb and Shoulder
  • Suprapubic Skin

Categories for Skin

Category of Skin:


Anatomy Articles

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Symptom Articles

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Disease and Condition Articles

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Related Symptom Topics

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Related Disease and Condition Topics

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  1. Source: MedLinePlus (NIH): skinconditions.html
  2. Source: NIAMS (NIH): Health_Info/ Kids/ healthy_skin.asp
  3. ibid.
  4. Source: MeSH (U.S. National Library of Medicine)
  5. Source: NCI Thesaurus
  6. Source: OAE Ontology
  7. Source: CDC NIOSH: niosh/ topics/ skin/ 
  8. Source: NCI Thesaurus
  9. ibid.
  10. Source: NIAMS (NIH): Health_Info/ Kids/ healthy_skin.asp
  11. Source: NIEHS (NIH): health/ assets/ docs_a_e/ environmental_diseases_environmental_diseases_from_a_to_z_english_508.pdf
  12. Source: MedLinePlus (NIH): moles.html

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Note: This site is for informational purposes only and is not medical advice. See your doctor or other qualified medical professional for all your medical needs.