Defense & Barriers 2: Skin Patterns Flashcards

1
Q

describe the region of the lesion & what it is

A

ALOPECIA in DORSO-CAUDAL LUMBAR AREA

from FLEA BITE HYPERSENSITIVITY in CATS, common presentation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

name the disease

A

feline atopic skin syndrome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what disease is this?
acute clinical signs? (3)
chronic clinical signs? (2)

A

FLEA BITE HYPERSENSITIVITY

ACUTE signs?
1. papules
2. crusted papules
3. hot spots

CHRONIC signs?
1. lichenification
2. hyperpigmentation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what disease is this?
lesions? (3)

A

MALASSEZIA DERMATITIS

lesions?
1. erythema
2. yellow/brownish greasy scales
3. hyperpigmentation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what disease is this?
where are lesions usually found?

A

CANINE ATOPIC DERMATITIS

lesions usually found in FLEXURAL FOLDS (belly, armpit, inguinal region) and EARS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what disease is this?

A

PATTERN ALOPECIA, NON-PATHOGENIC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what kind of lesions is this?
what 2 things usually found inside?

A

PUSTULE

EOSINOPHILS & NEUTROPHILS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

skin has ____ means to react to injury

A

LIMITED

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

use ___ magnification to form dermatological differential diagnoses, and use ___ to divide and narrow these diagnoses

A

LOW, HIGH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

carcinoma vs. sarcoma terms for neoplastic histologic patterns?

A

carcinoma = nests, cords, glands

sarcoma = streams, whorls, bundles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

name of disease?
how rare?
what kind of pattern is this?

A

culicuoides hypersensitivity, “itchy skin rash”

MOST COMMON SKIN IRRITATION IN HORSES

PERIVASCULAR DERMATITIS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

name of disease?
what kind of pattern is this?

A

CANINE ATOPIC DERMATITIS

PERIVASCULAR DERMATITIS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

name of disease?
what kind of pattern is this?

A

FLEA BITE HYPERSENSITIVITY

PERIVASCULAR DERMATITIS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what kind of pattern is this?
duration?

A

PERIVASCULAR DERMATITIS

CHRONIC SURFACE TRAUMA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

secondary effects of perivascular dermatitis? (3)

A
  1. TRAUMA to the surface of the skin
  2. proliferation of BACTERIA, particularly Staph pseudintermedius and scheiferi
  3. MALASSEZIA infection
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

perivascular dermatitis
= what is it & how cells act
2 things typical for it?
diagnostic strength?

A

= ANY kind of allergic skin disease pattern, non-specific; INFLAMMATORY CELLS come OUT of vessel and STAY AROUND IT

2 things typically in perivascular dermatitis reactions?
–> LATE-PHASE TYPE 1 HYPERSENSITIVITY REACTION
–> often see ACANTHOSIS

WEAK diagnostic strength because VERY COMMON

17
Q

PARAKERATOTIC hyperkeratosis
found in what kind of pattern?
3 diseases it can indicate?

A

found in PERIVASCULAR DERMATITIS

indicates…
1. zinc-responsive dermatitis
2. metabolic disturbance
3. superficial necrolytic dermatitis

18
Q

what disease is this?
what type of pattern?

A

disease = NOTOEDRIC MANGE

PERIVASCULAR DERMATITIS

19
Q

what disease is this?
pathogenesis?
what type of pattern? **something specific present

A

SUPERFICIAL NECROLYTIC DERMATITIS

pathogenesis?
–> occurs due to HEPATOPATHY where there’s LOW CIRCULATING AMINO ACIDS and thus NOT ENOUGH NUTRITION FOR SKIN TO UNDERGO APOPTOSIS

it’s a PERIVASCULAR DERMATITIS pattern, particularly PARAKERATOTIC hyperkeratosis

20
Q

interface dermatitis pattern
= what is it?
diagnostic strength?
2 diseases that usually manifest?

A

= immune-mediated pattern where inflammatory cells target basal membrane zone & keratinocytes

STRONG diagnostic strength!

usually CUTANEOUS LUPUS and CYTOTOXIC DERMATITIS

21
Q

disease name?
pattern?

A

disease = CANINE NASAL LOCALIZED DISCOID LUPUS

INTERFACE pattern

22
Q

disease name?
pattern?

A

disease = EXFOLIATIVE CANINE LUPUS

INTERFACE pattern

23
Q

intraepidermal pustular dermatitis pattern
characterized by what? (easy answer)
causes… (2)
diagnostic strength?

A

characterized by PUSTULES IN EPIDERMIS

causes?
1. pemphigus foliaceus
2. pustular foliaceus

diagnostic strength?
STRONG

24
Q

disease name?
pattern?
pathognomonic clinical sign?

A

PEMPHIGUS FOLIACEUS

INTRAEPIDERMAL PUSTULAR DERMATITIS PATTERN

pathognomonic clinical sign = CRUST on ear

25
disease name? pattern? pathophysiology?
PEMPHIGUS FOLIACEUS INTRAEPIDERMAL PUSTULAR DERMATITIS PATTERN pathophysiology? often occurs as TYPE 2 HYPERSENSITIVITY REACTION where Abs are made against DESMOCOLLIN-1 in DESMOSOMES
26
nodular dermatitis pattern alternative term? = what do we see? (2, one is very important) what 2 types of infections usually occur with this? what determines how we make a diagnosis?
also called DIFFUSE dermatitis = aggregates cells in epidermis & FURUNCULOSIS usually from BACTERIAL or MYCOBACTERIAL infection diagnosis depends on TYPE OF INFLAMMATORY INFILTRATE
27
panniculitis pattern = definition what disease in cats vs. dogs?
= inflammation of pannicular adipose tissue DOGS = STERILE IDIOPATHIC CONDITION CATS = MYCOBACTERIOSIS
28
what disease is this? what pattern?
PEMPHIGUS FOLIACEUS INTRAEPIDERMAL PUSTULAR DERMATITIS
29
what pattern is this?
SUPEPIDERMAL VESICULAR DERMATITIS
30
subepidermal vesicular dermatitis pattern affects WHAT? diagnostic strength? 2 types of diseases it causes? (+ specific pathologies)
affects BASEMENT MEMBRANE ZONE STRONG diagnostic strength 2 types of diseases it causes? 1. CONGENITAL GENODERMATOSES = DEFECT IN THE BASEMENT MEMBRANE ZONE --> causes EPIDERMOLYSIS BULLOSA 2. ACQUIRED AUTOIMMUNE DISEASE affecting component of BMZ --> causes MUCOUS MEMBRANE PEMPHIGOID & EBA
31
what disease is this? what pattern?
MUCOUS MEMBRANE PEMPHIGOID SUBEPIDERMAL VESICULAR DERMATITIS PATTERN
32
what disease is this? (hint = INFLAMMATION)
FOLLICULITIS
33
what PATTERN is this?
INTERFACE dermatitis
34
what PATTERN is this?
ACUTE PERIVASCULAR dermatitis