chapter 6 dermatology Flashcards

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1
Q

pruritus

A
obstructive biliary disease
pvera
contact dermatitis
scabies
lichen planus
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2
Q

contact dermatitis

A
T4HSN 
new exposure to offending agent
nickel earrings
well circumscribed
vesicles/bullae
patch testing to determine AG
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3
Q

atopic dermatitis

A

first year of life
weeping skin head/diaper
FH/PH of allergies + asthma
scratching the skin - breaks bacterial

AH, topical steroids, topical tacrolimus

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4
Q

seb derm

A

cradle cap, blepharitis
scaly skin
selenium + ketoconazole topically + steroid topically

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5
Q

fungal infections

A

clear centrally + expand peripherally
distorted toe nails

if flouresces green under woods lamp = microsporum
if not, tricophyton

dx w/ scraping + KOH prep to visualize fungus or culture.

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6
Q

which fungal infections need PO tx?

A

tinea capitis + onchomycosis

otherwise use azoles or griseofulvin

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7
Q

candidiassis

A

oral thrush is normal
immunodeficiency / diabetes if recurrent
tx w/ local nystatin /azole + PO nystatin/ketoconazole

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8
Q

scabies

A

mite visible burrows: finger web spaces + wrist
pruritus
secondary bacterial infections
immunocompromised = norwegian scabies, crusted == thousands of mites, looks like prosiasis

dx via microscopy
tx via permethrin cream

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9
Q

tinea versicolor

A
multiple patches of various sizes and color on torso
notice in summer
dx w/ KOH
tx w/ selenium and amidazole
malassezia
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10
Q

lice

A

dx w/ microscopy
tx w/ permethrin
decontamination of bedsheets

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11
Q

warts

A

HPV
older children = hands
6 * 11 = salicylcic acid, liquid nitrogen, curretage

genital
16 * 18 = cervical cancer

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12
Q

molluscum

A

pox virus - kids and sex
freeze or curretage

if giant or diffuse - HIV

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13
Q

rosacea

A

acne – middle age
erythema, alcohol, hot
bulbous red nose + blepharitis

oral tetracycline + topical metronidaozle

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14
Q

hirsutism

PCOS, cushing, drugs (minoxidil, steroids, phenytoin)

A

virilization: deep voice, frontal baldning, clitoromegaly

- -> check androgen secreting ovarian tumor

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15
Q

male pattern baldness

A

genetic

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16
Q

psoriasis

A

MTX cyclosporine biologics

UV light corticosteroids

17
Q

herald patch on trunk followed by similar itchy lesions

A

syphillus testing
reassurance
pityriasis roasea

18
Q

lichen planus -pruritic, purple, white like lesions

A

monitor oral lesiosn for oral cancer

19
Q

tetracyclines
OCPs
phenothiazines

A

photosensitivity

20
Q

erythema multiforme

A

sulfa drugs
herpes
penicillin
idiopathic

if severe: SJS : wide spread
TX: w/ supportive: fluid, pain control, super ifnection monitoring

21
Q

erythema nodosum

A
inflammation of subQ tissue tender red nodules
sarcoid
cocci
UC
strep/TB/drugs (sulfa)

Tx: leg elevation, compressive bandages

22
Q

pemphigus vulgaris = life threatening middle aged elderly patients == flaccid bullae in oral mucosa, rupture easily == nikolsky sign + == IgG to desmoglein 3 + lace lake fishnet IF pattern = tx w/ steroids

A

pemphigous bullous = linear pattern, also tx w/ steroids, niklosky neg

23
Q

decubitus ulcers
stage 1: intact skin
stage 2: partial thickness loss of dermiss (blister)
stage 3: full thickness
stage 4: full thickness w/ exposed bone/muscle
unstageable: eschar

A

periodic turning use of special air mattresses
cleanliness and dryness
skin inspection
when missed, lesions become infected

tx w/ surgical debridgement
+ abx if infected

24
Q

excessive perspiration

A
MI
TB
infection
hyperthryoidism
pheochromocytoma
25
Q

dysplastic nevi syndromre

A

genetic syndrome: multiple moles
FH melanoma
tx w/ f/u and bx, avoid sun, suscreen

26
Q

keratoacanthoma

A

mimics skin cancer
flesh colored on face
rapid onset and rapid involution

tx w/ observation

27
Q

keloids

A

overgrowths of scar
blacks
pink back chest delts ear piercing

28
Q

BCC

A

shiny papule head
umbilicated center w/ pearly borders, easy bleeding
sunlnight increases risk

tx w/ excision

29
Q

SCC

A

preexisting AKs

bowen disease

30
Q

black dots on palm or nail in blacks

A

melanoma

31
Q

paget disease of breast

A

crusted nipple

invasive DCIS

32
Q

stomatitis

A

fissuring of corners - angular chomatitis

B complex + vitamin C