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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
Q

SQC is the most common Cancer of the lower lip

What would microscopy show for SQC?

A

Squamous cells with KERATIN PEARLS

26
Q

What does microscopy for Apthous Ulcer Canker Sores show?

A

Fibrin coated ulcerations with underlying mononuclear infiltrates

27
Q

Contact Dermatitis or Urticaria?

A

Contact Dermatitis

Erythematous papules and vesicles

28
Q

Contact Dermatitis or Urticaria?

A

Urticaria

Causes = infection, NSAIDs, IgE, radiocontrast

well circumscribed raised erythematous plaques with central pallor

29
Q

etx for Pemphigus Vulgaris ; cp?-2

A

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
Q

cp for Mild Drug Allergy - 2 ; What type of hypersensitivity reaction is this?

A
  1. Urticaria
  2. Pruritus without systemic symptoms

Type 1 IgE Hypersensitivity reaction

31
Q

Hidradenitis Suppurativa Acne Inversa etx ; cp?

A

chronic recurring inflammatory occlusion of the FolliculoPiloSebaceous units –>

Painful intertriginous nodules that can –> abscess and scarring

32
Q

What are the risk factors for Hidradenitis Suppurativa Acne Inversa? - 5

A
  1. DM
  2. Obesity
  3. Smoking
  4. Mechanical stress (friction, pressure)
  5. Fam hx

Painful intertriginous nodules that can –> abscess and scarring

33
Q

What is the Diagnosis? ; What is the major risk factor for this condition?

A

Actinic Keratosis (precursor to Squamous Cell Carcinoma) ; SUN

tx = Fluorouracil

34
Q

Diagnosis? ; Tx?-2

A

Tinea Capitis Dermatophytosis ;

  1. Griseofulvin PO
  2. Terbinafine PO
35
Q

What type of hypersensitivity is Nickel allergy?

A

T cell mediated Type 4 hypersensitivity

36
Q

Diagnosis?

A

Psoriasis

37
Q

Describe the symptom manifestation for Pityriasis Rosea

A

initial lesion Herald patch progresses into many oval plaques that follow the cleaveage lines of the trunk

38
Q

What is a Marjolin Ulcer?

A

SCC that comes from wound or burn and has higher risk for metastasis

39
Q

Tx for Keloids

A

Intralesional CTS

40
Q

What is the Diagnosis? ; Tx?

A

Actinic Keratosis (precursor to Squamous Cell Carcinoma) ; SUN

tx = Fluorouracil (also used in Bowen SCC insitu)

41
Q

What is the step wise approach to treating Acne Vulgaris

A

Treating Bad Acne Is vulgar

1st: Topical Retinoids with salicylic acid = Comedonal Acne
2nd: add Benzoyl peroxide = Inflammatory Acne
3rd: add Antibiotics (Topical before Oral) - erythromycin, clindamycin = Inflammatory Acne
3rd: add Isotretinoin PO = Nodular Cystic Acne

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

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