Dermatology

Question 1

Stuck on appearance

Answer 1

basal cell papilloma/seborrheic keratosis

Question 2

Picket fence pearly border

Answer 2

BCC

Question 3

Dermatitis herpetiformis

Answer 3

coeliac disease

Question 4

Erythema nodosum

Answer 4

Sarcoidosis, UC, TB

Question 5

Erythematous bullseye lesion (erythema migrans)

Answer 5

lyme disease

Question 6

Ash lead spots/shagreen patches

Answer 6

tuberous sclerosis

Question 7

Honey coloured crust

Answer 7

imetigo (GAS or staph)

Question 8

Cafe au lait spots

Answer 8

neurofibromatosis type 1 or 2

Question 9

Silver scales on extensor surfaces

Answer 9

psoriasis

Question 10

Cauliflower appearance

Answer 10

plantar warts

Question 11

Kaposi’s sarcoma

Answer 11

HIV, immunosuppressed (transplant)

Question 12

Intense eryhtema on cheecks and proximal limbs of child

Answer 12

slapped cheek syndrome (erythrovirus/parvovirus 18)

Question 13

Small umbilicated translucent papules that look fluid filled but are solid

Answer 13

molloscum contagiosum (viral infection in kids)

Question 14

Flaccid blisters that can burst easily to form erythematous erosions

Answer 14

pemphigus (has acantholysis-loss of desmosomes)

Question 15

Large tense bullae that are itchy and dont burst

Answer 15

pemphigoid

Question 16

Heliotrope rash and scaly knuckles

Answer 16

dermatomyositis

Question 17

Fish scale skin

Answer 17

ichthyosis

Question 18

Velvety thickened lesions in axillae

Answer 18

acanthosis nigricans

Question 19

Target lesion

Answer 19

erythema multiforme

Question 20

How is dihydrotestosterone made?

Answer 20

made from testosterone by 5-alpha reductase (in the hair follicle)

Question 21

Autoantibodies against desmoglein 3

Answer 21

pemphigus

Question 22

Autoantibodies to hemidesmosomes

Answer 22

pemphigoid

Question 23

merkel cells/discs

Answer 23

light touch

Question 24

langerhan cells

Answer 24

dendritic cells for antigen presentation

Question 25

pacinian corpuscle

Answer 25

transient pressure

Question 26

Meissners corpuscle

Answer 26

tactile (smooth from rough)

Question 27

Ruffinis

Answer 27

deep and continous pressure

Question 28

sebaceous glands

Answer 28

all over body except palms and soles
abundant in face and scalp
sebum, pilosebacous unit

Question 29

bacteria involved in acne

Answer 29

propionibacterium

Question 30

Acne drugs

Answer 30

topical isotretinoin
benzoyl peroxide
azelaic acid
oral tetracycline or doxycycline
oral isotretinoin

Question 31

Drugs that typically cause erythema multiforme major

Answer 31

sulphonamides
anticonvulsants- lamotrigine, carbamazapine
allopurinol

Question 32

How do melanocytes make melanin?

Answer 32

convert tyrosine to melanin

Question 33

treatment or MRSA

Answer 33

vancomycin

Question 34

parasitic skin infections

Answer 34

lice

scabies

Question 35

fungal skin infections

Answer 35

ringworm(tinea)

candida

Question 36

hyperkeratosis

Answer 36

increased thickness of keratin layer

Question 37

parakeratosis

Answer 37

persistence of nuclei in the keratin layer

Question 38

acanthosis

Answer 38

increased thickness of the epidermis (hyperplasia and thickening of spinous layer)

Question 39

spongiosis

Answer 39

odema in between keratinocytes

Question 40

satelite lesions

Answer 40

cutaneous candidisas

Question 41

Management of anyphylaxsis

Answer 41

300mg adrenaline adults

150mg children