derm

Question 1

what is molluscum contagiosum

Answer 1

• VIRAL + common (esp eczema kids)
• asymptomatic (unless AD/infected)
• selflimiting in immunocompetent (6-18mnth)
• pearly / round / small papules –> cheesy oily if squeezed

Question 2

when to refer in mol cont

Answer 2

eyelid + assoc RED EYE
extensive lesion - poor control HIV
anogential –> STI screen

Question 3

advice w mol cont

Answer 3

avoid sharing towels/bed/ shaving area
w assoc AD - emollients ?topical steroids

Question 4

erythema multiforme

Answer 4

-immune mediated, self limit (4wks)
- TARGET LESIONS (3 rings)
- major= mucosal invvole, otherwise minor
- mostly trigger infection (HSV1)
- acral distributions
-skin develop peripherally–> central
- symmetrical, extensor
- painful, pruitic.swollen

Question 5

pityriasis rosacea

Answer 5

-common, self limit, adolescent +young adult
-1-3mnth w/o Tx
- cause unknown ?viral OR drug induced
- large herald patch, usually on trunk
- crops smaller circle/oval following lines of cleavage (XMAS TREE)
-scaling on most = periphery w central clearing
- Mx not needed - emoll if dry and itch

Question 6

acral distrubution meaning

Answer 6

peripheral parts of the body, includes arms and hands, legs and feet, and nails, ears and nose, penis +nipples

Question 7

pityriasis versicolor

Answer 7

-superficial fungal infection (malassezia)
-well demarcated, fine,scaly plaques
- can be hypo/hyper/erythematous
-trunk / arms / neck
-aSx/ mild itch
-evoked scale sign = stretching/scratched
-topical Tx / if bad systemic

Question 8

Tx for pityriasis versicolor

Answer 8

TOPICAL:
apply+leave 5-10 mins before rinsing, daily for 1-4 wks
- imidazokle shampoo/ zinc pyrithione / selenium sulphide
Creams BD 1-4 wks
- ketoconazole cream
SYSTEMIC: (for bad disease)
- fluconazole / itraconazole
NOT ORAL KETOCONAZOLE

Question 9

Leser-Trelat sign

Answer 9

SUDDEN appearance multiple seb ks due to GI carcinoma