2.10 Photo, photo, photo, photo

Question 1

Constant throughout the day/year
Long waves penetrate deeply - dermis, subcutaneous fat
Chronic exposure = connective tissue degeneration

What UV is this?

Answer 1

UVA

Question 2

Greatest during the summer - most harmful of waves
High amt of exposure to corneum/superficial layers
Sunburn/tan and inflammation

What UV is this?

Answer 2

UVB

Question 3

Absorbed by ozone layer
Transmitted only by artificial sources – germicidal lamps

What UV is this?

Answer 3

UVC

Question 4

Very sensitive

Always burn easily; never tans

Answer 4

Type I

Question 5

Very Sensitive

Always burns easily; tans minimally

Answer 5

Type II

Question 6

Sensitive

Burns moderately; tans gradually and uniformly (light brown)

Answer 6

Type III

Question 7

Moderately sensitive

Burns minimally; always tans well (moderate brown)

Answer 7

Type IV

Question 8

Minimally sensitive

Rarely burns; tans profusely (dark brown)

Answer 8

Type V

Question 9

Insensitive

Never burns; deeply pigmented (black)

Answer 9

Type VI

Question 10

Definition: Skin changes superimposed on intrinsic aging by chronic sun exposure

Answer 10

Photoaging

Question 11

Sun damaged skin is characterized by?

Answer 11

Elastosis (a coarseness and yellow discoloration of the skin)
Irregular pigmentation
Roughness or dryness
Telangiectasias
Atrophy, deep wrinkling, follicular plugging, and a variety of benign and malignant neoplasms

Question 12

What is Thickened, wrinkled, yellowish skin – forehead/back of neck?

Answer 12

Solar Elastosis

Question 13

What is Thinned skin, prominent blood vessels, easy bruising, etc?

Answer 13

Atrophy

Question 14

What is Deep, do not disappear by stretching the skin.

Answer 14

Wrinkles

Question 15

What is sun-induced wrinkling on back of neck that forms a rhomboidal pattern?

Answer 15

Cutis Rhomboidalis Nuchae-

Question 16

What are the Photoaging Vascular Changes?

Answer 16

1) Diffuse Erythema - Fair-skinned individuals
2) Ecchymoses and Stellate pseudoscars
§Bleeding into skin following minor trauma
§Exposed surfaces of back of hands and arms
§Atrophy, ease of skin tearing
3) Telangiectasias - Cheeks, nose, ears
4) Venous Lake - Round, purple ectatic vessels, lower lips and ears

Question 17

What is Red-brown reticulated pigmentation with telangiectasias, atrophy, prominent hair follicles. Chest and neck?

Answer 17

Poikiloderma of Civatte

Question 18

What are the Photoaging Papular Changes?

Answer 18

• *Nevi** - more numerous on sun-exposed surfaces
• *Seborrheic Keratosis** - more numerous in sun-exposed areas
• *Yellow Papules (solar elastosis)** - dull-to-bright yellow papules that may coalesce to form plaques
• *Favre Racouchot** - Comedones and cysts around the eyes

Question 19

Photoaging: Tx

Answer 19

Topicals: Retinoids
Slow to produce change (3-6 months)
§Increased photosensitivity during tx = need daily sunscreen use
Treats fine wrinkles, pigmentation changes, tactile roughness (not effective for course wrinkling or telangiectasias – vascular changes)

Resurfacing: Chemical peels, Dermabrasion, lasers
Faster results.Mild/Significant perioperative morbidity
Complications: Scarring/Hypopigmentation