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[2b] A- step 2 CK > Derm > Flashcards

Derm Flashcards

1
Q

Identify; When does this onset and regress? ; Describe composition

A

Capillary Hemangioma; Birth - 6 mo and regresses by 7 yo. ; Small Capillaries that BLANCHES on pressure

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2
Q

What causes Purulent cellulitis

A

Staph A

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3
Q

What causes NONPurulent cellulitis

A

GASP

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4
Q

Between flexor and extensor, which is more involved with Eczema Atopic Dermatitis

A

Flexor

If superimposed with HSV –> Eczema Herpeticum which –> hemorrhagic crusting

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5
Q

Rash description: scaly, erythematous, pruritic rash with a raised border and central clearing ; tx?-2

A

Tinea Corporis (ringworm)

Tx = topical clotrimazole or topical terbinafine

Dx = KOH of skin scrapings

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6
Q

Dx ; Demographic?

Non Blanching Blue Grey Sacral patches

A

Mongolian Spot dermal melanocytosis (fade during childhood) ; Pretty much every race except white lol

  • These should be NON-Tender*
  • Often described on test as Non Blanching Blue Grey Sacral Patches*
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7
Q

Dx

A

Squamous Cell Carcinoma

Most common skin cancer in immunocompromised patients

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8
Q

How do Corticosteroids affect the skin?

A

causes Drug induced Monomorphic papular ACNE

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9
Q

Dx ; Management?

A

Basal Cell Carcinoma

rarely metastasizes but can locally invade so –> Mohs surgical removal

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10
Q

How do you confirm diagnosis for this? ; Treatment?

A

Bullous Pemphigoid

bx showing IgG and C3 deposits at basement membrane ; high potency topical CTS

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11
Q

Lipomas and Epidermal inclusion cyst can both present as painless benign nodules

How do you differentiate the two? - 3

A
  1. EIC resolves spontaneously and can come back. Lipoma don’t resolve w/out surgery!
  2. EIC are FIRM vs Lipoma which is soft rubbery
  3. EIC may drain cheesey white discharge +/-
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12
Q

Describe a Dermatofibroma

A

benign fibroblast proliferation that forms hyperpigmented nodule usually on LE that causes center dimpling when pinched

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13
Q

Dx

A

Ichthyosis Vulgaris

  • diffuse dermal scaling resembling fish or reptile scales, MUCH WORST than eczema*
  • tx = topical retinoids*
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14
Q

Which dermatologic condition is Hepatitis C associated with?

A

Porphyria cutanea tarda with skin fragility and photosensitivity

also associated with EtOH and OCPs

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15
Q

Dx

A

Seborrheic Keratosis

benign epidermal tumor of mid to elderly pts that presents with brown STUCK ON round lesions

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16
Q

Dx

A

Lichen Planus

Papules flat topped, pruritic, planar, polygonal

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17
Q

Which antibiotic is most associated with phototoxic drug eruptions?

A

Tetracyclines

especially in sun-exposed areas

18
Q

What type of cellular reaction is respondible for Allergic Contact Dermatitis?

erythematous papules and vesicles

A

T cell mediated Type 4 hypersensitivity

19
Q

MOD for Lentigo ; demographic?

A

intraepidermal melanocyte hyperplasia that –> EVEN pigmentation ; elderly

20
Q

How should you work up melanoma?

A

excisional bx with initial margins of 1-3 mm of normal tissue also

21
Q

cp for Rosacea - 4 ; What are the common triggers?-4

A
  1. central face erythema
  2. facial flushing
  3. burning
  4. telangiectasia

hot drinks, EtOH, emotion, heat

Rosacea can –> Permanent Flushed skin!

22
Q

Description of Seborrheic Dermatitis ; Tx?

A

erythematous plaques with an oily greasy scaling of the scalp, eyelids, nasolabial folds and postauricular areas ; nonmedicated shampoo

23
Q

tx for comedonal noninflammatory acne

A

Topical Retinoids

Use Benzoyl Peroxide for inflammatory acne

24
Q

Dx? ; Tx?-2

A

Tinea versicolor Malassezia ; selenium sulfide or ketoconazole

salmon colored hypo or hyperpigmented macules that appears more readily after sun exposure since surrounding skin is tanned

25
SQC is the most common Cancer of the lower lip What would microscopy show for SQC?
Squamous cells with **KERATIN PEARLS**
26
What does microscopy for Apthous Ulcer Canker Sores show?
Fibrin coated ulcerations with underlying mononuclear infiltrates
27
Contact Dermatitis or Urticaria?
Contact Dermatitis ## Footnote *Erythematous papules and vesicles*
28
Contact Dermatitis or Urticaria?
Urticaria ## Footnote Causes = infection, NSAIDs, IgE, radiocontrast *well circumscribed raised erythematous plaques with central pallor*
29
etx for Pemphigus Vulgaris ; cp?-2
IgG autoantibodies against desmogleins (adheres epidermal keratinocytes) ; 1. Flaccid Bullae WITH 2. Mucosal Erosions This is associated with **Nikolsky** sign (light rubbing of skin separates epidermis)
30
cp for Mild Drug Allergy - 2 ; What type of hypersensitivity reaction is this?
1. Urticaria 2. Pruritus **without systemic symptoms** Type 1 IgE Hypersensitivity reaction
31
Hidradenitis Suppurativa Acne Inversa etx ; cp?
chronic recurring inflammatory occlusion of the FolliculoPiloSebaceous units --\> Painful intertriginous nodules that can --\> abscess and scarring
32
What are the risk factors for Hidradenitis Suppurativa Acne Inversa? - 5
1. DM 2. Obesity 3. Smoking 4. Mechanical stress (friction, pressure) 5. Fam hx ## Footnote Painful intertriginous nodules that can --\> abscess and scarring
33
What is the Diagnosis? ; What is the major risk factor for this condition?
Actinic Keratosis (precursor to Squamous Cell Carcinoma) ; SUN tx = Fluorouracil
34
Diagnosis? ; Tx?-2
Tinea Capitis Dermatophytosis ; 1. Griseofulvin PO 2. Terbinafine PO
35
What type of hypersensitivity is Nickel allergy?
T cell mediated Type 4 hypersensitivity
36
Diagnosis?
Psoriasis
37
Describe the symptom manifestation for Pityriasis Rosea
initial lesion **Herald patch** progresses into many oval plaques that follow the cleaveage lines of the trunk
38
What is a Marjolin Ulcer?
SCC **that comes from wound or burn** and has higher risk for metastasis
39
Tx for Keloids
Intralesional CTS
40
What is the Diagnosis? ; Tx?
Actinic Keratosis (precursor to Squamous Cell Carcinoma) ; SUN tx = Fluorouracil (also used in Bowen SCC insitu)
41
What is the step wise approach to treating Acne Vulgaris
**T**reating **B**ad **A**cne **I**s vulgar ## Footnote 1st: **T**opical Retinoids with salicylic acid = Comedonal Acne 2nd: add **B**enzoyl peroxide = Inflammatory Acne 3rd: add **A**ntibiotics (Topical before Oral) - erythromycin, clindamycin = Inflammatory Acne 3rd: add **I**sotretinoin PO = Nodular Cystic Acne

[2b] A- step 2 CK (16 decks)

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