Allergic Contact Dermatitis Flashcards
repeated exposure to milder irritants causing more resistance to irritants
hardening effect
what do you apply to alkali irritant causing dermatitis
weak acid
alkalis to skin
dissolve keratin
acids to skin
corrosive
preservation of eggs
sodium silicate (water glass)
weaker acids are
astringent
more widely used acid than others
sulfuric acid
powerful oxidizing substance
nitric acid
strongest inorganic that can dissolve glass
hydrofluoric acid
how to neutralize hydrofluoric acid
hexafluorine -> 10% calcium gluconate & magnesium oxide
protoplasmic poison
phenol (carbolic acid)
white eschar on the surface of the skin
phenol (carbolic acid)
absorbed phenol can cause
glomerulonephritis
arrhythmia
phenol is neutralized with
65% ethyl or isopropyl alcohol
airborne contact dermatitis may lead to
generalized exfoliative dermatitis
stellate ganglion blockade
gabapentin
capsaicin
mixture of tear gas in trichloroethane and various hydrocarbons resembling kerosene
mace
small straw colored follicular plugs and papules on the malar crescent, retro auricular areas earlobes neck shoulders and scrotum
chloracne
acute stage of chloracne
chemical burn
chronic stage of chloracne
hyperpigmentation
hirsutism
skin fragility
usual method of exposure for chloracne
direct contact
chloracne histologically
loss of sebaceous glands
frequent cause of occupational dermatitis in machine tool operators
lubricating and cutting oils (hydrocarbons)
cause 10% of occupational dermatitis
solvents
systemic drug related intertriginous and flexural exanthema (SDRIFE)
baboon syndrome
allergens bind with selfproteins to create complete antigen
sensitization phase
occurs upon repeated exposure to the allergen
elicitation phase
most frequent site for nail polish dermatitis
eyelid dermatitis
toxicodendron contains
uroshiol
first symptom in toxicodendron dermatitis
marked pruritus
most striking diagnostic feature of toxicodendron dermatitis
linear grouping of vesicles
what to avoid in toxicodendron dermatitis treatment
antihistamine ointments
“caine” anesthetics
prevent or diminish experimentally produced poison ivy dermatitis
quaternium-18 bentonite
most frequently caused by nickel and chromates
metal dermatitis
diagnosis for nickel dermatitis
positive patch test reaction
primary irritants or as sensitizers to produce allergic contact dermatitis
chromium
frequent cause of chrome dermatitis
hexavalent chrome compounds
may act as irritants and as sensitizers
mercury
most common sensitizer (accelerator)
thiuram mix
most often the cause in shoe allergy
mercaptobenzothiazole
cause depigmentation of the skin and ACD
hydroquinone antioxidants
identified to cause half of unsuspected cases of allergic dermatitis
myroxylon pereirae (Balsam of Peru)
common cosmetic in india, smeared in forehead
kumkum