Burns and Other Skin Lesions
First Degree Burn: Epidermis only
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/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)
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
Pustule
• Elevated lesion filled w/ pus
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
Cyst
• Nodule that contains fluid or semisolid material
Macule
• Distinguished from surrounding skin by color
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