Contact Dermatitis Flashcards

Contact dermatitis
Terms Definitions
Present in shoes and athletic gear
Mercaptobenzothiazole
Eucerin contains?
Kathon CG
delanolated wool is free of?
Americol
Another name for Balsam of Peru?
Myroxylon pereirae
Cement contains
Chromates
Black Henna
Paraphenyldiamine
Steroid Class reactivity?
A> B> D2> D1> C
Natural rubber latex comes from what plant?
Havea braziliensis
Nitrile and neoprene are latex free, but they contain what?
rubber accelerators

Latex free without rubber accelerators=Ndex free and polyvinyl chloride
Foods that contain nickel?
canned foods
chocolate
licorice
nuts
Contrsuction workers with cement get what ype of ACD?
Ulcerated

-cement-hexavalent chromates
Toxicodendron (Rhus) family includes the following plants? What is the allergen?
poison ivy, oak, sumac

Allergen=Uroshiol

Cross Reacts with-MICJGR
Mango
Indian marking nut tree
Cashew nut
Japanese lacquer tree
Gingko biloba tree
Renga
Colcophony is in whar substances? cross reacts with what? what is the allergen?
in rosin or tacky substances/adhesives

cross-reacts with benzoin and balsam of peru

allergen is abeitic acid
allergen associated with compositae family?
sesquaterpene lactone on leaves and stem

-pacific northwest foresty association

-lettuce, crysanthemum, liverwarts, sunflowers, daisies, ragweed, pyrethrum, chrysanthemum, fevefew, artichoke

-compositae aka asteraceae
Alstramaria leads to irritant or ACD. what flowers are in this class? ACD in what workers?
Tulips, sensitizer is tulipase a, a glycoside.
Peruvian lillies also

Calcium oxalate associated with irritant
sensitizer in horseradish?
isothyocyanates
Phytophotodermatitis requires exposure to what?
UVA radiation
psoralens, 8 and 5 methoxypsoralen

-umbilliferae

photoallergic-oxybenzone most commonly
Frangrance mis contains what substances that lead to ACD
cinnamic aldehyde
Balsam of Peru contains what that causes ACD? what subtances contain balsam of peru?
benzoyl benzoate

Colas, spices, tomoatoes, wine, beer, tea, soda
Cathon CG is in Eucerin, what is the chemical name?
Methylchlorothiazolone
Allergen related to piroxicam as well as nasal spray and otic or opthalmic solutions?
thimerosol
Anacardiacea is aka?
Toxicodendron genus

Sensitizer=pentadecylcatechol in oleoresn (uroshiol)

Poison oak, ivy and sumac

Cross reactions-Mango (peel), cashe, Japanese lacquer tree, Brazilian pepper tree
Balsam of peu is aka?
Myroxylon balsarum

cross reacts with turpentine, colophony, benzoin, wood tars, spices (cinnamon, clove, vanilla, curry)
Alliaceae family contains what? what is the sensitizer?
Onions, garlic and chives are in the Alliaceae family.

Sensitizer is Diallyl disulfide (also alypropyl disulfide, allicin)
Irritant Contact Dermatitis with Daffodil? what spp? what is the irritant?
Narcissus spp.
Calcium oxalate is the irritant
Chili pepper is also known as what?
Solanacea.

Irritant is capsaicin
Phytophoto family Apiacea of Umbilliferae has what plant members?
Parsely, celery, parsnip, hogweed, fennel
Phytophoto with family Rutaceae is associated with what members?
Lime, rue, burning bush, bergamot orange, Hawaiin lei flowers
Phytophoto with family Moracea is associated with what pertinent members?
Fig tree
(Ficus carica)
Corticosteroid class with no cross-reactions?
Class D1

Testing substance for class D1 is Colbetasol 17-propionate
Predisone allergy can be tested with tixocortol 21-pivolate, the same substance used to test for which steroid class of allergy?
Class A Corticosteroids
Budesonide tests for allergies to what class of steroids?
Class B
Hydrocortisone Butyrate tests for allergies to what class of steroids?
D2 (D2 cross-reacts with class A)
Desoximethasone tests for reactions to what class of steroids?
Class C
Chemicals in carbamate allergy?
2 dithiocarbamates
diphenylguanidine
Neoprene ?cement allergy?
cement allergen
Most overly read false +?
Cobalt
Delanolated wool contains?
americol
Latex cross reacts with what tropical fruits?
Passion fruit
PAPAyas
Bananas
Avocados
Chestnuts
Kiwi
Benzocaine is an ester anesthetic that cross-reacts with what?
STPPP
Sulfa
Thiazides
PABA
PPD
Parabens (preservative)
Antigen found in parsnip?
Furocoumarin
Material most commonly associated with disperse blue 124 allergic contact dermatitis?
cellulose acetate
Family f flowers with sesqueterpene lactone?
daisies
pine sap aka
colcophony
Purpuric contact dermatitis associated with?
black rubber
disperse blue
Esters cross react with?
Sulfas
Thiazides
PABA
aniline dies
-ppd
Most common sunscreen ingredient associated with acd?
Oxybenzone
Ethylene diamine is contained in what?
"HVAMP"
Hydroxyzine
V
A
Meclozine
Phenergan
Least allergenic classes of steroids?
Classes C and D1
Budesonide reacts with what corticosteroid class?
Class B
Monomer of epoxy resin in liquid form is allergenic and risk is decreased with what process?
Heating
Allergen in acrylic nails?
methacrylate
propylene glycol is in what?
antifreeze
temovate
olux
Tixocortol reacts with what steroid classes?
Groups A and D2
Family Alliaceae includes what?
Garlic, onions, chives

-allergen is diallyl disulfide
Family Alstroemeriaceae includes?
tulpis and Peruvian lilly

-Allergen is tulipalin A
Causes black dot dermatitis?
Urushiol ( a pentadecacathecol) in family Toxicodendron (Anacardiaceae)
Family Apiaceae (aka Umbilliferea) consists of what plants?
celery, fennel, hogweed, parsnip

-phototoxicity due to furocoumarins (psoralens and angelicins)
Family Compositae or Asteracee contains what plants and what is the allergen?
Artichokes, chamomile, chrysanthemum, liverwort, ragweed, sunflower, marigold, dandelion

-Allergen is sesqueterpene lactone
-Permetrhin (elemite) is derived from chrysanthemums
Alstomeria family contains what substance?
Tulipalin A
Sunflower contains what?
sesqueterpine lactone

-also chrysanthemums, lettuce, ragweed
Pine has what allergen
Colcophany
Lime and celery?
8 or 5 methxypsoralen
Agavaceae familycontains?
Calcium oxalate crystals
Patch testing not recommended if oral steroids are taken how long before proposed testing?
< 1 week

<4 weeks for IM steroids
Allergen associated with black dermatographism?
Gold
dimethylyoxime test turns swab pink after contact with what?
nickel
co-reacts with nickel, assoc. with punctate purpura in eccrine ostia?
Colbalt.

m/c false +
In cement (cement dust), leather tanning, wood preservatives, textiles (green), suture (chromic)
Potassium dichromate
aka myroxylon pereirae
Balsam of Peru
Neopreent allergens in sports gears. what is the chemical?
p-tert butyl formaldehyde resin
extract of chamomile, in aquaphor healing ointment, newer contact derm 2010
bisobolol
Lacquered nails contain?
Tosylamide Formaldehyde resin
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