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clph 467
acne (derm part 3)
39
Pharmacology
Graduate
09/24/2011

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Term
general definition of acne
Definition
an inflammatory disease of the sebaceous glands and hair follicles of the skin characterized by comedones, papules, and pustules

affects 90% of teen population
80% of patients are between 12-25 yo
Term
factors that exacerbate acne
Definition
drugs
oil-based cosmetics
emotional stress
physical pressure (helmet, chin strap) because of constant irritation
Term
drugs that exacerbate acne
Definition
androgenic steroids
corticosteroids
lithium (used with biopolar diseases)
anti-epileptics (phenytoin)
tuberculostatic drugs
oral contraceptives (especially those with androgenic steroids)
Term
what is a comedone
Definition
hair follicle plugged with sebum, keratin, and dead skin (sebum builds up)
-this creates a growth media and bacterial colonization begins in trapped sebum
Term
if acne gets worse can get these 3 inflammatory lesions
Definition
papules - red, inflammed
pustules - yellow, inflammed
ruptured contents
Term
examples of 2ndary lesions
Definition
excoriations
erythematous macules
hyperpigmented macules
scars
Term
types of non-inflammatory lesions
Definition
whitehead
blackhead
Term
fact or fiction: foods such as pizza, chocolates, and sweets worsen acne
Definition
fiction: not a lot of evidence but if you notice then avoid
Term
fact or fiction: high glycemic-load diets may contribute to the development of acne or worsen the condition
Definition
fiction: not an absolute, might be some truth bc in the world acne is worse of a problem where there is high carb diets
Term
fact or fiction: stress can worsen acne
Definition
fact
Term
fact or fiction: most patients with acne have an over production of androgens
Definition
fiction: sebaceous glands are more sensitive to androgen
Term
fact or fiction: comedone extraction is useful and results in immediate cosmetic improvement
Definition
fact: will build up - if popped can cuase irritation but in a couple of days its better
Term
fact or fiction: frequent cleansing of the areas affected by acne will enhance the control of lesion
Definition
fiction: anymore than 2xs a day will not make acne any better
Term
fact or fiction: acne is typically worse during summer months rather than winter months
Definition
fiction: worse in winter but if high humidity can make it worse
Term
fact or fiction: alcoholic based gels provide better penetration of active ingredients into the skin than do lotions or creams
Definition
fact: it dies it up (dont want to use an ointment)
Term
fact or fiction: topical preparation used to treat acne should be applied to the entire face and NOT just to the individual acne lesions
Definition
fact: it takes 4-6 weeks to go full course. chances are will go into other places that are not cleaned
Term
fact or fiction: delaying the treatment of acne can increase the risk of scarring
Definition
true
Term
fact or fiction: the use of polyester cleaning sponges can help with the removal of comedones
Definition
fiction: can cause more irritation
Term
whitehead vs. blackhead
Definition
whitehead: trapped contents, enlargement of gland, aka closed comedone

blackhead: tapped contents, dilated opening, melanin accumulates, aka open comedone
Term
brand: accutane
generic: ???
Definition
isotretinoin
Term
dosing of accutane
Definition
10, 20, 40 mg capsules
0.5 - 2 mg/kg/day in 2 doses (with food)) for 15-20 weeks
-some dermatologist recommend a cumulative dose 120-150 mg
-effectiveness increases with higher doses
-if acne flares after >2 months off tx, a 2nd course may be used
Term
adverse effects of accutane
Definition
acne will get worse before it gets better
dry or chapped skin, nose, lips, and eyes
hair shedding
peeling of palms and soles
brittle nails
photosensitivity
arthralgias and myalgais
pregnancy cat = X
elevated liver transaminates (AST, ALT)
elevated triglycerides and cholesterol
HA, muscle aches, fatigue, mood changes
night blindness
risk of depression and suicide
Term
Why is accutane category X and what must happen to reduce risk
Definition
highly teratongenic (18-23%)
extensive counseling before use
females must use 2 forms of birth control
must have 2 preggy test before and then every months
Term
monitoring of pts on accutane
Definition
-LFTs and TG at baseline and q 2-4 weeks
-psychological screening
-assure BC use x 1 month before staring and 1-4 months after tx
-monthly urine pregnancy tests
Term
counseling tips of accutane
Definition
-avoid pregnancy/proper use of contraceptives
-adverse effects
-do not take Vit A supp (includes nutr supp) bc increase of toxicity
-use moisturizer, lip balm, and artificial tears
-use of sunscreen
-take with food
Term
examples of treating complications of acne
Definition
dermabrasion
chemical risk (70% glycolic acid)
laser resurfacing
costly
Term
goals of therapy for acne
Definition
-decrease excessive production of sebum
-decrease abnormal desquanmation of epithelial cells in sebaceous follicles
-decrease proliferation of bacteria
-relieve discomfort, improve skin appearance, prevent scars, and minimize psychological stress
Term
who must enroll in the ipledge program of accutane
Definition
patients, physicians, and pharmacies

dispensing occurs only after the pharmacist has recieved an authorization code
Term
ipledge program rules
Definition
-pharmacist must have authorization # from iPledge program
-must distribute Accutane Medication Guide
-can only dispense a 30 day supply with no automatic refills
-pharmacists will get a "do not dispense after date" - 7 days past office visit
-assures females have had 2 negative preggy test before initial Rx
-females must have a negative pregnancy test every month while on therapy
-patients are registered and have been informed of risks
Term
describe treatment follow up for any patient with acne
Definition
-2 to 4 months will be necessary to determine if a treatment regimen has been successful
-lengthening acne free periods is key
-going to take a while to know if therapy works
Term
oral antibiotics used to treat moderate to severe acne
Definition
tetracycline
minocycline
doxycyline
erythromycin
azithromycin
TMP/SMZ (bactrim)
Term
freq and strength of tetracycline
Definition
250 mg BID- QID
Term
freq and strength of minocycline
Definition
50 - 100 mg daily - BID
Term
freq and strength of doxycycline
Definition
50 - 100 mg daily - BID
Term
erythromycin (freq/strength)
Definition
250 mg QID
Term
azithromycin (strength/freq)
Definition
250 mg 3 times a week
Term
TMP/SMZ (Bactrim) (freq/strength)
Definition
1 DS tab daily
Term
when is accutane use in therapy
Definition
when pts have failed other treatments or when it relapses soon after discontinuing other therapies
Term
overall purpose of accutane with therapy
Definition
-destorys comedones and prevents new ones from forming
-inhibits growth of bacteria
-decreases inflammation
-indicated for nodular/cystic, disfiguring scaring acne
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