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General Practice > Dermatology > Flashcards

Dermatology Flashcards

1
Q

what is the alternative name for ‘athlete’s foot’?

A

tinea pedis

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2
Q

what are the risk factors for Tinea Pedis?

A
  • wearing shoes, getting warm and sweaty
  • locker room floors
  • repeated exposure
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3
Q

what are the signs of tinea pedis?

A

interdigital (in the toe webs)/plantar, hyperkeratotic, erythematous lesions

can be either dry and scaly or wet and soggy

sometimes in ring worm pattern

may have onychomycosis

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4
Q

how do you distinguish tinea pedia from eczema on the foot?

A

eczema is bilateral whereas tinea pedis is more often unilateral

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5
Q

what is an “Id reaction”?

A

an allergic response to fungus, causing vesicles in the area or on arms, chest and sides of fingers

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6
Q

how do you manage tinea pedis?

A

butinafine/terbinafine (antifungal)

sertaconazole/econazole (antifungal)

lotrisone (antifungal + cortisosteroid)

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7
Q

What is this?

A

interdigital tinea pedis

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8
Q

what is the mdeical tword for “senile warts”?

A

seborrhoeic keratosis

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9
Q

what is this?

A

seborrhoeic keratosis

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10
Q

describe the typical appearance of a seborrhoeic keratosis.

A

“stuck on”, waxy, verrucous, velvety papules and plaques with a variety of colours

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11
Q

What is this?

A

syringoma

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12
Q

where are the two most common areas for syringomas?

A
  1. inferior eye lid
  2. vulva
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13
Q

What is this?

A

syringoma

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14
Q

what is the most common skin cancer?

A

Basal cell carcinoma (BCC)

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15
Q

define BCC.

A

cancer of non-keratinizing cells in the basal layer of the epidermis

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16
Q

describe the pcommonest presentation of a BCC

A

translucent papule/nodule with telangectiasias, rolled borders, may have ulceration.

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17
Q

what is this?

A

BCC

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18
Q

what is this?

A

nodular BCC

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19
Q

what are the classifications of a BCC?

A
  1. nodular BCC
  2. pigmented BCC- ddx = nodular melanoma
  3. superficial BCC: isolated patch of ezcema which does not respond to treatment
20
Q

What is the diagnosis?

A

roseola infantum

21
Q

what is exanthem subitum?

A

roseola infantum

22
Q

what is the presentation of roseola infantum?

A

high fever in 6-36 months old child, when the fever subsides a rose-pink maculopapular rash appears on the face, trunk, neck and extremities

23
Q

what causes roseola infantum?

A

HHV7/6

24
Q

what is the most important differential diagnosis for fever and rash in a child?

A

bacterial meningitis

25
Q

how do you manage roseola infantum?

A

manage the fever with cool sponge baths and/or acetaminophen

26
Q

what is atopic dermatitis?

A

eczema

27
Q

what is the most common type of psoriasis?

A

plaque psoriasis

28
Q

what is the Koebner phenomenon?

A

when injury/irritation induces psoriasis at the site.

29
Q

what is the diagnosis?

A

plaque psoriasis

30
Q

what is the diagnosis?

A

eruptive psoriasis

31
Q

what is the commonest presentation of plaque psoriasis?

A

red , sharply defined plaques with a silvery scale on the scalp, elbows, knees, plams, glans, penis, vulva, intergluteal fold and other flexures.

Antoher sign is nail pitting.

32
Q

what is the diagnosis?

A

eczema (atopic dermatitis)

33
Q

what is the diagnosis?

A

eczema (atopic dermatitis)

34
Q

what is the diagnosis?

A

molluscum contagiosum

35
Q

what are the features of molloscum contagiosum?

A

red pustules, looks like little snails with central umbilication

lesion moves slowly as a result of self-innoculation

can be sexually transmitted

36
Q

how do you manage molloscum contagiosum?

A

self-resolving

37
Q

what causes molloscum contagiosum?

A

pox-virus

38
Q

what does herpes simplex virus cause?

A

cold sores

39
Q

what does herpes zoster cause?

A

shingles and chicken pox

40
Q

what are the features of herpes zoster (shingles)?

A

pain in dermatomal region, then a red, painless, vesicular rash in dermatomal region

41
Q

what is the diagnosis?

A

pityriasis rosea

42
Q

what are the features of pityriasis rosea?

A

“christmass tree” distribution, of a red, fine bran-like surface/fine scale

43
Q

how do you manage pityriasis rosea?

A

self-resolving

44
Q

what is the diagnosis?

A

scabies

45
Q

what are the features of scabies?

A

burrows in skin, with allergic reaction to eggs

General Practice (8 decks)

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