Integument Quiz

Question 1

how do you treat pityriasis rosea?

Answer 1

you dont, its a self limiting bacterial infection, red and scaly that is most common between ages 10-20

Question 2

the most common location for melanoma to occur in women is:

Answer 2

legs. for men its the back

Question 3

what is the structure that is indepdent of the hair apparatus?

Answer 3

the eccrine sweat gland - it doesnt need a hair follicle to exude its stuff

Question 4

where is the isthmus of the hair follicle?

Answer 4

between the infundibulum and the inferior portion. so between the arrector pili and the sebaceous

Question 5

what is the function of sweating in the palms and feet?

Answer 5

to help grip objects - so sweating in the palms and hands is physiological

Question 6

what germ layer is the epidermis?

Answer 6

ectoderm

Question 7

how does UVB treatment help psoriasis?

Answer 7

chronic sun exposure decreases langerhans cells = decreased immune response

Question 8

during keratinization, keratinocytes mature and ultimately lose their nuclei before being shed, the approximate time estimated for this process to take place is :

Answer 8

28 days, but in psoriasis it happens in like 4 days and this results in abnormal maturation and abnormal epidermis

Question 9

what would cellulitis present with?

Answer 9

warmth, intense erythemia, and edema

Question 10

what would lime disease present with>

Answer 10

erythema chronicum migrans, a migrating erythmatous patch, often with an indurated or pale center

Question 11

what does varicella zoster present with?

Answer 11

vesicles that develop over several days, in a band of 1-2 dermatomes, leaving dried crusts as they resolve

Question 12

the histoligic changes seen when spongiosis is present on microscopic examination of the skin include:

Answer 12

intraepidermal intracellular edema - which is usually seen in eczema ( atopic dermatisis)

Question 13

where do langerhans cells live?

Answer 13

in the epidermis.

Question 14

where do histiocytes, eosinophils, fibroblasts live?

Answer 14

dermis

Question 15

infection with staphylococcus aureus is commonly link to what skin issues:

Answer 15

impetigo, folliculitis, furunculosis.

Question 16

what causes scarlet fever?

Answer 16

streptococcus

Question 17

what skin secretion is not significantly influence by emotional factors?

Answer 17

sebum production- it is relatively constant through a 24 hour time period

Question 18

what skin secretions are influenced by emotion?

Answer 18

eccrine sweat production, apocrine sweat production, cuntneaous vascular supply

Question 19

what manifests as macules and patches rather than palpable lesions?

Answer 19

vitiligo -

Question 20

the most common antibiotic used to treat acne is:

Answer 20

tetracycline. note that amox, cloxacillin, and ciprofloxacin would rarely be used for this indication

Question 21

the most common cause of allergic contact dermatitis in the general population is :

Answer 21

nickel - think of jordan and belts! 5% of the population have this contact allergy

Question 22

which tinea infection requires the longest and most aggressive course of treatment?

Answer 22

tinea unguium - generaly requires oral therapy and a 12 week treatment. the other tineas repond to topical therapy in 4 weeks timse.

Question 23

patient has a small group pruritic vesicles on the right aspect of the forehead, present for one week with a history of previous episode in the same area. what is it?

Answer 23

herpes simplx virus

Question 24

a microscopic specimen of skin demonstration vaculoation of keratinocytes in the upper epidermis, a basket weave straum corneum, and a koilocytosis is most consistent with what diagnosis?

Answer 24

wart.

Question 25

the causative organism for roseola infantum ( exanthm subitum) is generally agreed to be:

Answer 25

human herpes virus 6

Question 26

when do you use KOH?

Answer 26

a dermatophyte or yeast infection, to dissolve the keratin so you can see the hyphae

Question 27

when do you use woods lamp?

Answer 27

to see tinea capitis, erythrasma, vitiligo

Question 28

when do you use oil microscope?

Answer 28

for scabies examination

Question 29

when do you use Tzank smear?

Answer 29

herpes simple, varicella, or zoster. it is positive when giant multinucleated keratinocytes are detected. it is only positive in 75% of early cases

Question 30

when do you use darkfield examination?

Answer 30

for syphilis

Question 31

guttate psoriais is most commonly associate with what bacteria? :

Answer 31

streptococci

Question 32

the correct layers of the epidermis, from innermost to outermout is:

Answer 32

basal layer, spinosum, granular layer, cornified layer

Question 33

a group of .5 cm papules have coalesced to form a single larger lesion would be most accurately defined as:

Answer 33

plaque

Question 34

a pathognomonic lesion of scabies is:

Answer 34

a burrow- a threadlike, meandering line gernally less than 1 cm in length typically located on hands or feet

Question 35

there is separation between the epidermis and dermis, which would lead to what primary skin lesion?

Answer 35

a bulla. this is a case of bullous pemphigoid

Question 36

what are the typical nail signs of psoriasis?

Answer 36

onycholysis, subunguar hyperkeratosis, oil drop sign.

Question 37

what is subungual hematoma due to most often?

Answer 37

trauma

Question 38

the principal chemical difference between the protein of the nail plate and the protein of the strateum corneum is

Answer 38

increased sulfer content. it is the cross linking in the sulphur moeities which increases the hardness of cutaneous proteins

Question 39

what are common signs of atopic dermatitis?

Answer 39

lichenification, exociration, crusts.

Question 40

a group of parallel lines in the skin, demonstrating loss of epidermis and superficial dermis, would best be defined as:

Answer 40

excoriations ( scratching)

Question 41

in a patient with eczema, where do the hyperkeratosis and acanthosis occur?

Answer 41

hyperketatosis = thickening of stratum corneum, and
acanthosis = thickening in stratum spinosum

Question 42

when will a scar develop?

Answer 42

when the skin disorder causes loss of the dermis

Question 43

will pemphigus leave scarring or not?

Answer 43

no scarring because the dermis is not affected, it is a splitting between basal layer of the epi, and the next layer up ( the stratum spinosum)

Question 44

regarding the use of botulinum toxin for treating hyperhidrosis, what is the MOA/

Answer 44

the botulinum toxin will decrease the release of acetylcholine at the sweat gland

Question 45

which of the following are under the direct influence of the peripheral nervous system?

Answer 45

sweat production and vasodilation

Question 46

what is good treatment for psoriasis?

Answer 46

narrow 311nm UVB radiation, biologics - because both of these target the immune system

Question 47

what are comorbidities with psoriasis?

Answer 47

psoriatic arthritis ( pauciarticular and nonsymmetric in distribution), cardiovascular disease

Question 48

will psoriasis scar?

Answer 48

no

Question 49

how many hair need to be lost before visible thinning is present?

Answer 49

half of the total content: 50,000 lost, out of 100,000

Question 50

what is the most common type of skin cancer/

Answer 50

BCC - thank god. its totalyl benign and you just scrape it off and its all good. smooth shiny telangectagic.

Question 51

what is the treatment for rosacea?

Answer 51

topical metronidazole, laser ablation, systemic antibiotic, topical azaleic acid

Question 52

what is the most common subtype of HPV causing condyloma acuminata?

Answer 52

6,11