Dermatology

Question 1

what rash is made worse with sun exposure?

Answer 1

lupus

Question 2

which rashes are made better with sun exposure?

Answer 2

eczema + psoriasis

Question 3

characteristics of lesion in epidermis?

Answer 3

scale, cracking, oozing fluid

Question 4

characteristics of lesion in dermis?

Answer 4

skin smoothed but raised surface

Question 5

difference between ulcer + erosion

Answer 5

erosion = partial loss of epidermis, no scarring

ulcer = full loss of epidermis, scarring

Question 6

what is eczema?

Answer 6

inflammatory condition of skin

reaction to insult - either external or internal (immune system)

exogenous or endogenous

Question 7

what 2 types of hypersensitivity reaction can allergic contact eczema?

Answer 7

type IV or I

Question 8

how to determine between type I + IV hypersensitivy?

Answer 8

IV = delayed = path test

I = immediate = skin prick (anaphylaxis)

Question 9

what is lichen simplex?

Answer 9

eczema due to scratching

Question 10

what are oral lichenoid inflammations caused by?

Answer 10

autoimmune destruction of epithelium

Question 11

3 type of of oral lichenoid inflammation?

Answer 11

1. lichen Planus
2. lupus
3. erythema multiforme

Question 12

2 types of oral inflammatory skin manifestations?

Answer 12

lichenoid inflammation

granulomatous

Question 13

2 types of oral blistering?

Answer 13

pemphigus + pemphigoid

Question 14

characteristics of lichen Planus?

Answer 14

whitish

reticulate

Question 15

what syndrome can cause erythema multiform?

Answer 15

Steven Johnsons syndrome

Question 16

difference between pemphigus + pemphigoid?

Answer 16

pemphigus = intraepidermal, easily rupture
pemphigoid = sub epidermal, don't rupture easily

Question 17

2 causes for oral blistering?

Answer 17

1. mechanobullous

2. autoimmune immunobullous

Question 18

what characteristic of lichen Planus make it suspicious?

Answer 18

atrophic or erosive

non-heterogenous areas of change

Question 19

what is oral sub mucous fibrosis?

Answer 19

premalignancy
palate + buccal mucosa appear white
severe trismus + dysphagia
hyperkeratosis + atrophy (hard)

Question 20

what is sideropenic dysphagia?

Answer 20

premalignancy
associated with paterson brown Kelly or Plummer Vinson
glossitis
due to iron deficiency - hypo chromic anaemia
dysphagia

Question 21

what is a leukoplakia?

Answer 21

predominantly white are of oral mucosa, can’t be classified as anything else, questionable risk

Question 22

what is erythroplakia?

Answer 22

predominantly red are of oral mucosa, can’t be classified as anything else, questionable risk

Question 23

is Leuko or erythro plakia more worrying?

Answer 23

erythro

Question 24

most common oral skin cancer?

Answer 24

SCC

Question 25

what is candidal leukoplakia?

Answer 25

type of chronic hyper plastic candidosis

severe dysplasia with candida infection on top

Question 26

where is the squamous layer of skin?

Answer 26

above basal layer in ep - also known as stratum spinosum

Question 27

do BCC or SCC grow quicker?

Answer 27

SCC