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135 Cards in this Set

  • Front
  • Back
Name for lesion:

flat, circumscribe, <5mm
Macule
Macule: what size?
<5mm
FLAT
Derm name for:

Freckle
Macule
Name for lesion:

Flat, >1cm
Patch
Patch: what size?
>1cm
Name for lesion:

Elevated, <5mm
Papule
Papule: size?
<5mm
Name for lesion:

Elevated, >1cm
Plaque

(may represent confluence of papules)
Name for lesion:

Elevated, fluid-containing lesion, >1cm
Bulla

(<1cm = vesicle)
Vesicle: what size?
<1cm

(fluid-containing)
Name for lesion:

Circumscribed collection of leukocytes
Pustule (NOT vesicle)
Difference b/w:

Papule vs. vesicle vs. pustule
Papule: <5mm, raised, no fluid
Vesicle: <1cm, clear fluid
Pustule: any size, pus
Name for lesion:

Elevated, INVOLVES DERMIS (may extend into subQ)
Nodule
Nodule: defining feature?
Involves dermis

(majority of lesion is below skin)
Name for lesion:

Elevated; superficial transient edema
Wheal
Difference b/w:

Telangectasia vs. petechiae vs. purpura
Telang: DILATED superficial venule/art/cap

Petech: CAP hemorhage (no blanch)

Purp: bleed under skin
Do petechiae blanch? purpura?
Neither blanch
Name for lesion:

Fine or coarse keratin flakes; loose or adherent
Scale
Name for lesion:

Dried serum/blood/pus overlying lesion
Crust
Name for lesion:

Depressed lesion w/lost epidermis; NOT extend into dermis (no scar)
Erosion
Erosion: involves what layers?
Epidermis only

(NO dermis)
Name for lesion:

Depressed lesion extending into dermis/subQ --> leads to scar
Ulcer
Acute urticaria:

Underling mxn
TYPE 1 hypersens
Acute urticaria:

what % pop at some point in life
15%
Acute urticaria:

-itchy?
-symm lesions?
-do lesions coalesce?
-lesions same age?
-how long do lesions last?
intense itch
ASYMM; DIFF AGES
lesions can coalesce
last 12-24 h
What dz:

5yo with pruritic rash on arms, legs, trunk; erythematous and EDEMATOUS; multiple plaques with clearings; lesions last 12-24h
Acute urticaria
Acute urticaria:

what causes itch?
Mast cells --> histamine
Acute urticaria: DEFINING FEATURE (to separate from exanthem)?
ITCHY (releived w/antihistamine)
Acute urticaria: which is greater allergen -- dog saliva or dander?
SALIVA
Acute urticaria:

Assoc w/asthma-ecz?
YES
What dz:

Insect bites --> pruritic lesions 3-10mm, RECURRENT/CHRONIC (1-2w)
Papular urticaria
Papular urticaria:

Underlying trigger?
INSECT BITES
Papular urticaria:

Smaller or larger lesions than acute urticaria?
SMALLER (3-10mm)
Papular urticaria:

Lesions last how long?
Insect bite --> lesions for 1-2 weeks!
What pathogen:

SCARLET FEVER
Strep
What dz:

erythematous, fine, SANDPAPER RASH in skin creases
Strep --> scarlet fever
What dz:

Dusky red macules (symmetrical) --> sharply demarcated wheals --> target lesions
Erythema multiforme
Erythema multiforme:

-symm?
-progression of lesions
Symm

red macules --> demarcated wheals --> targets
Erythema multiforme: underlying mxn?
ACUTE HYPERSENS

-most commonly 2/2 HSV (may see after meds)
Erythema multiforme: how long do individual lesions last?
1-3w
What dz:

Herpes infection --> target lesions lasting 1-2 weeks
Erythema multiforme
Drug eruptions: all due to type 1 hypersens?
No - can be non-immunologic trigger of mast release (e.g. opiate, NSAID)
Erythema infectiosum: where does reticular rash appear? (body parts)
Trunk, extrems

(NOT face - slapped)
Erythema infectiosum: what pathogen?
Parvo B19
Name for:

Lyme dz papule --> large erythematous, annular patch
Erythema migrans
Erythema migrans: due what dz?
LYME

(initial large erythem patch)
Difference b/w:
Erythema migrans vs. Erythema multiform
Migrans: Lyme bite --> erythem patch

Erythema multiform: HSV infxn --> acute HYPERSENS --> maculs -> wheals --> targets
What dz:

3-5d fever --> pink maculopapular rash on trunk --> face and extrems
Roseola (HHV-6)
Roseola: due what pathogen?
HHV-6
Roseola: fever?
Yes - fever 3-5d --> pink maculopapular rash on trunk & extrems
Name for:

Cradle cap
Seborrh dermatitis
What dz:

Erythematous plaques with GREASY YELLOW SCALE
Seborrh dermatitis (e.g. cradle cap)
Can Cradle Cap spread?
Yes - may see ears/neck --> DIAPER AREA
Causes what dz:

Malassezia
Seborrh dermatitis (older pts)
Eczema/atopic derm: common what AREA of scalp?
POSTERIOR
Eczema: flexor or extensor?
EXTENSOR
Diaper candidiasis: peaks what age?
7-10mo
Psoriasis: waxy or non-waxy scale?
NON-WAXY
Childhood psoriasis: what % pts have FHx?
40% have FHx psoriasis
White or black head:

Open comedone
BLACK
Folliculitis & Furuncolosis: due what pathogen?
STAPH
Name for:

PAPULES in beard area
Pseudofolliculitis
Pseudofolliculitis:

-where located?
-papules or pustules?
BEARD (adj hair follicles)

PAPULES (NOT pustules)
Acne: due blockage of what type of gland?
Pilosebacious

Blockage --> sebum --> superinfect w/proponiobacterium
Erythema nodosum: underlying mxn?
HYPERSENS rxn

2/2 infxn, drug, IBD
Erythema nodosum:

-tender?
-pustular?
TENDER
NODULAR - not pustular
Leads to what dz:

-block pilosebacious gland
-block apocrine follicular unit
Piloseb --> acne

Apocrine --> hidranetitis suppurative
Hidradenitis suppurative:

Due blockage what unit?
APOCRIN
Hidradenitis suppurativa:

Superinfected with what pathogens (2)
Staph aureus
Strep pyogenes
Hidradenitis suppurativa: what is distribution in:

-M
-F
M: perineal & perianal

F: groin, axilla, inframamm
Rosacea: see in children?
early form in adols
Rosacea: see what TYPES of lesions (mac/pap/pust, etc)
Papules & micropustules

NOT comedones
What dz:

Redness on malar & nasal surface --> worse with EtOH/spicy/temp/stress
Rosacea
Rosacea: how tx?
topical METRONIDAZOLE
Perioral dermatitis: variant of what skin dz?
ROSACEA

(RANDOM!!!!!)
What dz:

Erythema, scaling & papules/pustules around mouth, nose, eyes of adolescent (*no comedones)
Perioral dermatitis (a variant of rosacea)
Perioral dermatitis: see comedones?
NO! (imporant)

See erythema, scaling, papules, pustules
Perioral dermatitis: how tx?
Topical metronidazole
Chronic contact dermatitis: what type of hypersens rxn? onset how long after contact?
TYPE IV

Onset 24-72h s/p contact
Chronic contact dermatitis:

Resolves after how long avoidance
days-weeks
Chronic contact dermatitis:

Commonly due to what med?
TRIPLE ANTIBIOTIC THERAPY --- BACITRACIN
Bacitracin: can CAUSE what skin dz?
Chronic contact dermatitis
Poison ivy/oak/sumac:

-cause what skin dz (name)
-what type of hypersens
Chronic contact dermatitis

TYPE IV
Nickel:

-cause what skin dz (name)
-what type of hypersens
Chronic contact dermatitis

TYPE IV

(SAME AS POISON IVY, etc)
How are skin lesions different?:

Acute vs chronic contact dermatitis
Acute: vesicles, edema, erythema, extremely pruritic

Chronic: no vesicles
Impetigo: what 2 pathogens
Staph aureus
Strep pyogens (GAS)
Impetigo: how tx? how tx if MRSA w/abscess?
TOPICAL MUPIROCIN

if comp --> systemic abx
Tinea corporus:

-what CLASS of pathogen?
-expect what exosure?
Fungus

Animal exposure
What dz:

Annular, well-circumscribed scaly plaque w/raised border --> center becomes brown OR hypopigments --> enlarges/coalesces --> mildly pruritic
Tinea corporus (ringworm)
Tinea corporus:

-well circumscribed?
-pruritic?
WELL CIRCUM!

Mildly pruritic OR asympt
Tinea corporus:

how dx?
CLINICAL

can confirm w/KOH scraping --> branches & rod-shaped septated hyphae
What dz:

coin-shaped lesions on legs & buttocks
Nummular eczema
Nummular eczema:

-where distrib?
-scale?
Buttocks & legs

Scale (sim tinea)
Pityriasis alba:

-hypo or hyperpigmentation?
-associated w/what exposure?
Hypopigment on face/neck/upper trunk

SUN exposure
What dz:

Hypopigmented lesions 0.5-5cm with well-defined border on face, neck, upper trunk s/p sun exposure
Pityriasis alba
What dz:

Large scaly plaque with raised border --> scaly papules & plaques on lines of cleavage
Pityriasis rosea
#1 etio diaper rash
Irritant dermatitis
What dz:

Diaper rash on CONVEX surfaces of skin; spares intertriginous creases
Irritant dermatitis
Irritant dermatitis: how tx (what med)?
Zinc oxide (cream, ointmnet)
Irritant dermatitis --> diaper rash:

Inv intertriginous crease?
No
What dz:

Diaper rash w/papules --> plaques & satellites
Diaper candidiasis
Diaper candidiasis: how tx?
Nystatin

Imidazole, miconazole, ketoconazole effective but not approved by FDA
What dz:

Diaper rash + streaks of blood on stool
GAS (strep pyogenes)
Can diaper rash 2/2 strep pyogenes lead to systemic infxn?
YES
Diaper rash 2/2 GAS (pyogenes):

how tx?
Oral abx
Diaper rash: can be caused by what vitamin deficiency?
Zinc

(e.g. acrodermatitis enteropathica, CF)
What dz:

Diaper rash --> crusty, weepy, may bleed
Langerhans cell histocytosis
Langerhans cell histocytosis: how dx?
skin bx
Acute urticaria: how tx? (2)
OTC loratidine/ceterizine --> oral prednisone

*NOT topical steroid (wide distrib)
Seborrheic dermatitis: how tx:

-infant
-older child
Infant: baby oil & brush --> medicated shampoo --> topical hydrocortisone

Older: ketoconazole cream
Comedonal acne:

-OTC drug?
-Drug of choice?
-Add which abx?
OTC: benzoyl peroxide (BPO)

#1: Retinoids (Tretinoin, adapalene)

TOPICAL abx: clinda, erythro
Comedonal acne:

-OTC drug?
-Drug of choice?
-Add which abx?
OTC: benzoyl peroxide (BPO)

#1: Retinoids (Tretinoin, adapalene)

TOPICAL abx: clinda, erythro
Inflammatory acne: add which drug?
ORAL tetracycline, OCPs
Inflammatory acne: add which drug?
ORAL tetracycline, OCPs
Retinoids: apply what time of day?
NIGHT

photosens --> sunburn
Acne:

Apply retinoid & BPO at same time?
NO - BPO inactivates retinoid

Retinoid at night (photosens)
BPO in AM
Retinoid: apply to moist or dry skin?
BONE DRY

(moisture makes more irritating)
Doxycycline: not used under what age?
no use <9yo (dental stain)
What acne medicine:

S/E pseudotumor cerebri
Doxy
Chronic contact dermatitis:

-use steroid? dosing?
Medium topical steroid bid x 2w
Pediculosis capitis:

How tx if you find nits but no adult lice on pt?
NO TX

Only tx if find adult
Pediculosis capitis:

Is vinegar or suffocating-ointment effective?
No
Permethrin:

Tx what dz?
Pediculosis capitis (lice)
Permethrin shampoo: kill lice ova?
NO - only kill adults (increasing resistance)

use 2-3x per WEEK
Malathion: tx what dz?
Pediculosis capitis (lice)
Pediculosis capitis:

Most effective drug?
Malathion 0.5% topical

(Lindance less effective 2/2 resistance)
Tx what dz:

Permethrin 5% cream at night --> wash off in AM
Scabies

(permethrin shampoo also used for lice)
Scabies: perform O/N permethrin washes how often?
initial --> once again in a week
Scabies: what is most persistent sx? how tx?
Itching may persist wks

Topical steroid, OTC diphenhydraminne
Scabies: how tx if no response to permethrin (or allergy)?
IVERMECTIN

(only FDA approved for >15kg)
Warts:

What fraction spont resolve in 2 yrs?
2/3
Warts:

OTC salicyclic acid useful?
YES
Warts: which more effective:

salicyclic acid OR liq N2
SALICYCLIC ACID
Warts:

Cantharidine effective?
UNCLEAR
Warts:

Candidal Ag therapy effective?
LIMITED EVIDENCE

(immunotherapy)