Abnormal skin colorations:

•Cyanosis

•Pallor

•Jaundice

•Albinism

•Erythema

Cyan = blue

Pallo = sway

Albi = white

Eryth = red

What about abnormal skin colorations?

How do you explain Deed’s foot?

What would cause that color?

Is the lack of sensation a symptom you would attribute to that color? Why or why not?

What parts of the scene are “fakey”?

What is the reality?Developing gangrene risks:Chronic lack of sufficient blood flow!Conditions causing this:Diabetes AtherosclerosisThrombosis - a clot in a blood vessel, also related to atherosclerosis Extreme cold injury (frostbite).

http://www.reversegangrene.com/A.htm

Burns are ranked based on the severity and the depth of tissue destruction.1st degree:Epithelium damaged ~red & painful, NO blisters

2nd degree:Epithelium & some dermis damaged ~red, white or tan, very painful, BLISTERS present 3rd degree (full thickness)

All layers damaged ~black, NO pain, NO blisters

Why are burns some of the most painful injuries?

Eschar

http://www.jsonline.com/911/images/1b.jpg

http://surgclerk.med.utoronto.ca/Burn/images/Burn3c.jpg

Have you ever wondered how they measure % of body burned?

They use the rule of 9s.

9

+9 = 189

18 + 18 = 36

18 +18 = 36

1

= 100%

How do you determine the extent of a burn?

Blood clot forms (we’ll discuss later)

Variety of new cells migrate to damaged area

Fibroblast divide rapidly and capillaries invade tissue

Fibrin replaced with other fibers

How do skin wounds heal?

1 2

3 4

As skin ages it loses:ElasticityThicknessMelanocytes (snowbird)Sebaceous gland activitySweat gland activityCapillary density

How does age affect your integumentary system?

What is the effect of each of these losses?

How about cumulative effects?

Types are identified based on the type of cells that mutate:Basal cell carcinomaLeast dangerous, start as “shiny” bump, center becomes concave and ulcerus Squamous cell carcinoma

Melanoma

Raised, red, “scaly” & ulcerus, can metastasize

Dark, flat, irregular, most deadly

Is all skin cancer equally dangerous?