Burns and Other Skin Lesions

Classification

First Degree Burn: Epidermis only

First Degree Burn

Second Degree Burn

Second Degree Burn: Epidermis and upper layers of the dermis

Second Degree Burn

Second-Degree Burns

Third Degree Burn: Complete destruction of the epidermis & dermis

Estimating percentages

Regeneration

Regeneration/Scarring

Scar

• Occurs whenever wound/ulcer has occurred; reflects healing

• Keloid: Abnl formation of CT; form w/ dermal tissue damage; initially are thick but may w/ time become white and atrophic

Skin graft donor site: about halfway through the initial healing stage

Papule

• Firm, raised lesion (less than 1cm in diameter)

Papule

Plaque

• Large, raised lesion (greater than 1 cm in diameter)

Plaque - Psoriasis

Vesicle

• Thin-walled blister filled w/ fluid, <1cm• Between Epi/Derm junction or within dermis

– Clinically significant

Vesicle

Pustule

• Elevated lesion filled w/ pus

Pustule

Crust

• Hardened deposits of serum and cellular debris

• result when serum, blood, or purulent (pus) exudates dries on skin surface

• “scab”

Wheal

• Firm, raised area of irregular shape/light center

Wheal

Cyst

• Nodule that contains fluid or semisolid material

Macule

• Distinguished from surrounding skin by color

Macule

Abrasion

• Epidermis removed, revealing dermis

Excoriation

• Epidermis is missing, dermis is exposed• Linear “scratch”

Ulcer

• Craterlike lesion caused by disintegration of the skin (epidermis and dermis)

• Heals w/ scarring

Bed Sore• Compression of skin between bony

prominence and other surface• Cuts off circulation

– leads to necrosis of tissue• - Lack of blood supply prevents proper healing• promotes infection

Fissure

• Linear crack or break from epidermis to dermis