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Flashcards in 11 - Sunburns & Sunscreens Deck (27)
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1

Tan

UV Radiation stimulates melanocytes in the germinating skin layer
to generate MELANIN

2 Processes:
Immediate Pigment Darkening

DELAYED Tanning = Menalogenesis

2

Sunburn

Result of an inflammatory reaction
mediators --> peripheral vasodilation

Superficial burn:
mild erythema / tenderness / pain / edema

Superficial / Partial Thickness BURN:
blisters / fever / chills / weakness / shock

3

UVC Band

200 - 290 nm

SCREENED OUT by the OZONE LAYER

emitted by some artificial sources of UV Radiation

absorbed by the dead cell layer

4

UVB Band

290 - 320 nm

90% of Sunburn Radiation

responsible for:
inducing skin cancer / wrinkling the skin / elastosis & collagen dmg
&
VITAMIN D3 SYNTHESIS

5

UVA Band

320 - 400ngm

Penetrates DEEPER into the skin

promotes photoaging

suppresses the IMMUNE SYSTEM

can be found in tanning booths

6

Drug-Induced PHOTOallergy

uncommon immunologic response

Urticaria / Bullae / Sunborn

reaction is NOT dose-related

Seen after at LEAST 1 prior exposure to the agent

7

Drug-Induced Photo-TOXICITY

Seen upon FIRST Exposure to Chemical agent

DOSE-RELATED

Appears as an Exaggerated sunburn

Reaction is NOT immunologically mediated

8

Select Medications 

PhotoToxicity / PhotoAllergy

Anti:
Cancer / Convulsants 
Depressants / Psychotics
Histamines / Hypertensives
Infectives / Malarials 

Coal Tar / Diuretics 

NSAIDS

Amiodarone / Retinoids / Statins

 

9

Premature Aging

Wrinking & Yellowing of the skin

Elastosis

Drying & Thickening

Cracking / Spider Vesicles / Growths

10

WARNING SIGNS OF CANCER

A B C D E 

Asymmetric

Border Irregularity

Color Variance

Diameter > 1/4 inch

Elevation & Enlargement

11

Sunburn 

RISK FACTORS

FAIR SKIN that always burn / History of a serious burn

Blonde/Red Hair /// Blue-green-grey eyes

History of freckling / growth on skin

FH of Melanoma / H of autoimmune disorder

current use of immunosuppresive / photosensitizing meds

 

12

Non-Therapy

Sunburn Prevention

Complete Avoidance of UVR

Use Protective Clothing:
Hat w/ 4 inch brim

long pants / shirt

Sunglasses

13

SPF

Sun Protection Factor
derived from an equation

ONLY considers UVB Radiation

SPF 30 provides ALL-DAY protection for all skin types

14

Minimal / Moderate / High

Sunburn Protection

SPF 2 -12 = MINIMAL

 

SPF 12-30 = Moderate

 

SPF 30+ = HIGH sunburn protection

15

Water-Resistant Sunscreen

40 Minutes or 80 minutes
of WATER Exposure

 

Waterproof / Sweat-proof / SunBLOCK
claims are NO LONGER ALLOWED

16

Broad Spectrum SPF

Greater than 15>

Protects against BOTH - UVB & UVA
SPF 15>
 or higher:

Helps reduce risk of 
skin cancer / premature againg
when used in conjuction with:
limiting time in the sun + wearing protective clothing

 

17

Broad Spectrum SPF

Less than 15<

protection from UVB / UVA

SPF <15 or lower:
only protection from sunburn

still has a skin cancer / skin aging alert

18

Chemical Sunscreen Ingredients

Aminobenzoic acid
AE = contact dermatitis / photosensitivity

Anthranilates
usually in COMBO / WEAK UV sunscreen

Benzophenones
UVA + UVB absorb /// sensitivity reactions

Cinnamates
UVA + UVB absorb /// does NOT adhere to skin well

Salicylates
weak sunscreens

Dibenzoylmethane
UVA absorption

19

Physical Sunscreens

SCATTER UVR

Titanium dioxide & Zinc oxide

Messy / discolor clothing

Efficacy is RELATED to THICKNESS they are applied

20

Combination Sunscreen Products

EACH active ingredient MUST contribute to the efficacy of a product

minimum SPF of 2

NO LIMITS on the # of ingredients that can be combined

21

GOOD Sunscreens

Neutrogena Ultra-Sheer Dry-Touch Sunblock SPF w/ Helioplex

Neutrogena UVA/UVB Sunblock SPF 45

Blue Lizard Australian Sunscreen

SOLBAR Sunscreen

Coppertone SPORT Sunblock GEL SPF 30

22

Chemical - FREE Sunscreens

Neutrogena Sensitive Skin Sunblock Lotion SPF 30

Vanicream Sunscreen

Clinique Super City Block SPF 25

23

Sunscreen APPLICATION

Allow adequate penetration

Apply 15 min prior to sun exposure

Adult body covered with <1 ounce

AVOID EYE CONTACT / EXTERNAL USE ONLY

Reapply

DO NOT use on children <6 mo
keep then in the SHADE / avoid using sunscreen
dress them in LONG SLEEVE / HATS / GLASSES

24

Sunscreen for

Children 6 months of age and OLDER

do NOT use sunscreen if <6 months old

Use sunscreen that contains:
Zinc Oxide / Titanium Dioxide

Keep children in the SHADE

Dress them in 
long-sleeve shirts / pants / wide-brimmmed hats / sunglasses

25

Sunburn RELIEF

AVOID further exposure

Cool Compresses

Heat stroke occurs with EXCESSIVE exposure:
Analgesics
Protectants
Local Anesthetics

Fresh aloe vera gel = INSUFFICIENT EVIDENCE

26

Sun Exposure

MAX Exposure is 10am - 3pm

Clouds reduce UV radiation up to 30%

Reflected UV radiation is Damaging

WET clothing allows 50% transmission

Window Glass blocks:
UVB radiation & 50% UVA radiation

27

Global Solar UV Index