Dermatology

what type of skin lesion is this?

macule

flat, nonpalpable spot <1cm diameter

macule

what type of skin lesion are these?

1. macule

2. patch

macule > 1cm diameter

patch

what type of skin lesion is this?

papule

palpable, elevated bump <1cm

papule

what type of skin lesion is this?

nodule

papule 1-2 cm diameter

nodule

nodule >2cm

tumor

name these skin lesions

1. papule

2. nodule

3. tumor

4. plaque

5. wheal

what type of skin lesion is this?

plaque

flat, plateau like, slightly elevated lesion

plaque

what type of skin lesion is this?

wheal

temporary elevation of skin due to edema

wheal

what type of skin lesion is this?

vesicle

palpable, fluid filled bump <1cm diameter

vesicle

what type of skin lesion is this?

bulla

vesicle >1cm

bulla

what type of skin lesion is this?

pustule

vesicle filled with pus

pustule

what type of skin lesion is this?

cyst

larger and deeper pustule

cyst

what type of skin lesion is this?

crust

dried residue of pus or blood

crust

what type of skin lesion is this?

scale

what type of skin lesion is this?

fissure

linar crack that extends into the dermis

fissure

flakes of exfoliated skin

scale

what type of skin lesion is this?

erosion

moist and not bleeding area of epidermis that heals without scarring

erosion

what type of skin lesion is this?

ulcer

erosion but deeper into dermis, may bleed, heals with scar

ulcer

what type of skin lesion is this?

excoriation

superficial abrasion, usually result of scratching intense intch

excoriation

what type of skin lesion is this?

lichenification

prolonged scratching causing epidermis to become rough and thickened, similar to plaque

lichenification

what type of skin lesion is this?

scar

injury to dermis heals, replaced by fibrotic connective tissue, thin and pink at first and then pale and atrophic later

scar

what type of skin lesion is this?

keloid

hypertrophic elevated scar

keloid

sclerosis or hardening of tissue

induration

what type of skin lesion is this?

induration

what type of skin lesion is this?

maceration

softened epidermis due to prolonged moist conditions

maceration

what type of skin lesion is this?

petechiae

small hemorrhages <.5cm diameter

petechiae

what type of skin lesion is this?

purpura

hemorrhages >.5 cm diameter

purpura

purpura caused by trauma

ecchymosis/bruise

what type of skin lesion is this?

purpura

what type of skin lesion is this?

eccyhmosis/purpura

what type of skin lesion is this?

telangiectasia

fine irregular lines due to dilated capillaries

telangiectasia

what pattern of skin lesion is this?

annular

description of skin lesion that is circular or ring shaped

annular

what pattern of skin lesion is this?

target/iris

description of skin lesion taht is circle within a circle

target/iris

what pattern of skin lesion is this?

confluent

description of lesions that run together

confluent

what pattern of skin lesion is this?

gyrate/serpiginous

description of lesions that are snake-like/wavy

gyrate

what pattern of skin lesion is this?

zosteriform

description of skin lesions that are in linear patteern along a nerve dermatome

zosteriform

what pattern of skin lesion is this?

intertriginous

description of lesion that is found between folds of skin

intertriginous

what distribution of skin lesion is this

acne vulgaris

what distribution of skin lesion is this

atopic dermatitis

what distribution of skin lesion is this

photosensitive eruptions

what distribution of skin lesion is this

pityriasis rosea

what distribution of skin lesion is this

psoriasis

what distribution of skin lesion is this

seborrheic dermatitis

what do you call this?

verruca

what is this caused by?

HPV infection of keratinocytes

where on the body is this viral infection commonly found

hands, elbows, knees

if HPV infectino of keratinocytes are found on the feet, what do you call it?

plantar warts

what do you call this?

herpes labialis/”cold sore”

what infection is this caused by?

HSV1

what do you call this?

herpes genitalis

what infection is this caused by

HSV2

what is this?

varicella/chickenpox

is this contagious?

yes, highly

how long is the incubation period for this infection?

2 weeks

what symptoms would you expect with this presentation?

fever, malaise, headache, anorexia

what infection is this describing?

rash that begins in the trunk and spread to the face and extremities as red papules that quickly become umbilicated vesicles

chickenpox/varicella

when does the infectious period start and end for someone with this infection?

just before the appearance of the rash until lesions crust over

what infection is this?

herpes zoster/shingles

what is herpes zoster?

reactivation of varicella virus usually after 55 yrs old

what infection is this describing?

lesions that appear along spnial or cranial nerve dermatome

herpes zoster/shingles

what infection can have post herpetic neuralgia lasting months to years after infection

herpes zoster/shingles

what infection is this?

rubella (german measles)

what infection is this describing?

pink to red macules and papule beginning of the face and neck, spreading to the trunk and extremities, usually resolving in 3 days

rubella/german measles

what is the difference between rubella and rubeola

rubella has milder symptoms and no Koplik’s spots

T/F: rubella infection of mother during pregnancy has no impact on the child

false, child is at risk for birth defects

what symptoms would accompany this presentation?

malaise, headache and lymphadenopathy

what infection is this?

rubeola (measles)

how is this infection spread?

respiratory droplets

what other diagnostic features would you expect with this presentation

koplik’s spots (white spots on buccal mucosa)

cough

coryza

conjunctivitis

photophobia

what infection is this describing?

maculopapular rash beginning near ears and spreading to the trunk and extremities with a fever exceeding 104 degrees

white spots can be seen on the inner cheek

rubeola (measles)

what infection is this?

rubeola (measles)

what do you call the diagnostic feature seen in the bottom picture? what is it diagnostic of?

koplik’s spots (diagnostic for rubeola/measles)