Apr9 M1-Intro to derm + derm ddx

Question 1

components of the integument to check on physical exam

Answer 1

• skin
• hair
• nails
• visible mucosa
• sweat glands
• vellus hair
• sebaceous glands

Question 2

total body skin exam: how often?

Answer 2

• Hx of skin cancer = once a year
• no hx = once in middle age
• immunosuppressed or lot of beauty marks = regularly

Question 3

if someone has a melanoma what’s more likely? A: they get a 2nd one B: their sibling gets a 1st one

Answer 3

B: that sibling gets a 1st one. so sibling should get ANNUAL EXAM

Question 4

lichen planus areas of manifestations and how it looks

Answer 4

• buccal mucosa = thin white lines on inside cheek

- skin and mucosa

Question 5

Wood’s light does what

Answer 5

light using UVA to see deep in skin and accentuate

Question 6

dermoscopy does what

Answer 6

accentuate image

Question 7

KOH testing for what

Answer 7

fungal culture

Question 8

cytology for what

Answer 8

bacterial culture

Question 9

patch test for what

Answer 9

allergy testing (done on the back) (dermato = for contact rxs only)

Question 10

imaging in derm for what

Answer 10

cancer

Question 11

tiny grouped vesicles dx + exact name of lesion

Answer 11

• basic herpes simplex

- vesiculobullous lesion

Question 12

(EXAM) name of flat lesion <0.5 cm

Answer 12

macule

Question 13

(EXAM) name of flat lesion >0.5 cm

Answer 13

patch

Question 14

(EXAM) raised-basic flat lesion <0.5 cm name

Answer 14

papule

Question 15

(EXAM) raised-basic flat lesion >0.5 cm name

Answer 15

plaque

Question 16

(EXAM) name of lesion raised with depth somewhere along its surface + <0.5 cm in size

Answer 16

nodule (can be a cancer)

Question 17

(EXAM) name of lesion raised with depth somewhere along its surface + >0.5 cm in size

Answer 17

tumor (can be a cancer)

Question 18

(EXAM) name of lesion raised with fluid <0.5 cm

Answer 18

vesicle

Question 19

(EXAM) name of lesion raised with fluid >0.5 cm

Answer 19

bulla

Question 20

(EXAM) name of special raised lesions

Answer 20

urticaria, cyst, pustule

Question 21

(EXAM) names given to certain surface changes

Answer 21

scale, crust

Question 22

(EXAM) name of certain lesions of lack of substance (reverse of raised)

Answer 22

atrophy, erosion, ulcer

Question 23

(EXAM) morphology details you can give about a derm lesion

Answer 23

• colour and distribution of colour
• shape (round, oval, polygonal, acriform, annular, serpiginous, anny word works)
• palpation (consistency, tenderness, temperature, mobility)
• grouping of the lesions
• distribution and location of the lesions

Question 24

name of a raised lesion of less than 0.5 cm with a depression in its center

Answer 24

umbilicated papule

Question 25

what happens after a while to vesicular lesions (like in herpes zoster or herpes simplex)

Answer 25

get hemorrhagic or pustular (secondary phenomenon)

Question 26

what happens after a while to bullae

Answer 26

can rupture (have to recognize erosions that are ruptured bullae)

Question 27

urticaria charact

Answer 27

- raised special lesion - one lesion exists <24 hrs - edema and erythema

Question 28

cyst charact

Answer 28

- raised-special lesion - fluid filled - encapsulated - lined by true epith - NO sebaceous glands so NOT a sebaceous cyst - dead skin cells inside

Question 29

epidermoid cyst def

Answer 29

cyst with epith and epidermal cells covering it

Question 30

pustule charact

Answer 30

- raised-special lesion - not clear fluid, fluid is pus (neutrophils) - can be neutrophils without necessarily infection, just inflam

Question 31

scaling lesion charact

Answer 31

- desquamation of skin surface | - flaking from stratum corneum

Question 32

crust lesion charact

Answer 32

- surface - hardened deposit from serum blood or pus - may be removable

Question 33

atrophy lesion charact

Answer 33

-wasting of tissue or failure to form -thinner and depressed EXAMPLE = STRIAE

Question 34

erosion lesion charact

Answer 34

- loss of all or part of epidermis (example in blistering disease or ruptured bullae) - moist circumscribed depression

Question 35

ulcer lesion charact

Answer 35

- loss of epidermis + all or part of the dermis + may be subcutaneous and reach the bone - circumscribed depression

Question 36

most important lesion to know about in hx

Answer 36

primary (earliest) lesion that appeared

Question 37

papulosquamous lesion charact

Answer 37

- macule(s) or patch(es) - may be a bit raised - may be red, edematous