Sun Induced Skin Disorders (McFalls)

Exposure to UVR is ______________

Cumulative

Which type of ultraviolet radiation has the longest wavelength?

UVA

Which type of ultraviolet radiation has the shortest wavelength?

UVB

Which type of UVR is responsible for synthesis of Vitamin D3 in the skin?

UVB

Which type of UVR has the ability to penetrate the dermis?

UVA

Which type of UVR only reaches the outer layer of the skin?

UVB

Which type of UVR is capable of changing DNA and cells?

UVA

Overexposure of which type of UVR can lead to skin cancer or photoaging?

UVA

Exposure to which type of UVR can lead to sunburn, skin cancer, or photoaging?

UVB

____________ occurs when UVR stimulates the melanocytes in the skin layer to generate and redistribute melanin

Suntan

_____________ is an acute reaction to excessive UVR exposure

Sunburn

_____________ can be done by UVA and UVB, while ______________ is primarily done by UVB

Suntan, Sunburn

Basal Cell Carcinoma and Squamous Cell Carcinoma are examples of __________________ skin cancers

Nonmelanoma

_______________ rarely metastasizes, while ___________ can metastasize

BCC, SCC

True or False: nonmelanoma skin cancers are more deadly than melanoma skin cancers

False

Where do melanomas tend to originate at?

Normal skin or existing nevi

Where do nonmelanoma skin cancers occur?

On sun-exposed areas of the body

Sunburns are _______________ burns

Superficial

Sunburns will have a maximum response at _______________ hours, and fade within ___________ days

6 to 24, 2 to 3

Which type of skin cancer appears as a translucent nodule that is ulcerated on sun-exposed areas of the head or neck?

BCC

Which type of skin cancer is a firm, skin-colored or erthematous nodule or plaque on sun-exposed areas of the body?

SCC

What are the ABCDEs of melanomas?

A: Asymmetric shape

B: Border irregularity

C: Color variation

D: Diameter larger than 6mm

E: Evolving mole

What is the main exclusion to self-treatment for sun-induced disorders?

Patients under 6 months of age

What are the best times to AVOID sun exposure?

10 am to 4 pm

________ determines a sunscreen's UV protection effectiveness

SPF (Sun protection factor)

_______________ sunscreens absorb and block the transmission of UVR to the epidermis

Chemical

Which type of sunscreen (chemical or physical) are broad spectrum?

BOTH

-Protect against UVA and UVB

What does it mean if a sunscreen is broad spectrum?

It will protect against UVA and UVB

A _______________ sunscreen will create a barrier to reflect and scatter UVR

Physical

Sunscreens should be applied _____________ before UV exposure

15 minutes

How often should water resistant products be reapplied?

Every 2 hours

SPF _______ prevents skin cancer

15

SPF ___________ and above can be used for those who easily burn

30

What are the special population exclusions for sunscreens?

Pediatrics

-Must be over 6 months

Pregnant

-Must be a physical sunscreen

Lactating

-Must be a physical sunscreen