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Disease and Defense > Skin Infections and Infestations > Flashcards

Skin Infections and Infestations Flashcards

1
Q

______ Atopic dermatitis: characteristic involvement of flexural skin: antecubital fossa, popliteal fossa, neck, wrists, ankles

A

Childhood

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2
Q

______ Atopic dermatitis: dry, red scaly areas confined to cheeks

A

Infantile

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3
Q

______ Atopic dermatitis: eyelids and Hands showing xerosis, ichthyosis vulgaris

A

Adult

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4
Q

Antibiotics known to commonly trigger allergic contact dermatitis

A

Bacitracin, neomycin

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5
Q

Atopic dermatitis presents on the ______ surfaces and results, in part, from ______ mutations.

A

Flexor, filaggrin

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6
Q

Candida are _____-eating fungi that most commonly cause ______.

A

glucose and serum; thrush (oral candidiasis)

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7
Q

Cause of seborrheic dermatitis

A

Malassezia furfur

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8
Q

Cause of stasis dermatitis

A

Lower extremity edema

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9
Q

Cause of Syphilis

A

Treponema pallidum

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10
Q

Causes of Cellulitis

A

Beta-hemolytic strep, haemophilus influenza, Staph aureus

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11
Q

Causes of Impetigo

A

Beta-hemolytic strep, Staph aureus

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12
Q

Dermatophytes are _____-eating fungi that cause ______ infections

A

keratin; tinea

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13
Q

Drug-induced exanthems usually begin___ days after starting a medication

A

7 to 14

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14
Q

KOH prep: diagnosis of _______

A

fungal infections

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15
Q

Location of seborrheic dermatitis.

A

Scalp

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16
Q

Location of stasis dermatitis.

A

Lower legs

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17
Q

Mineral oil: diagnosis of ______

A

scabies

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18
Q

Psoriasis can be associated with ______ (3)

A

Psoriatic arthritis, heart disease risk, metabolic syndrome

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19
Q

Psoriasis presents on the ______ surfaces and may serve as an independent risk factor for _______.

A

Extensor, heart disease

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20
Q

Tzanck smear: diagnosis of ______

A

Herpesviruses

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21
Q

Viral exanthems are most common in _____ (100%) with high risk also in _____.

A

Mononucleosis; HIV

22
Q

What pathology? adult louse is easily found attached to bases of hairs

A

Genital lice

23
Q

What pathology? asymptomatic tan scaly macules that may develop into patches with truncal distribution, caused by _______

A

Tinea versicolor; malassezia furfur

24
Q

What pathology? barrier disrupted skin due to filaggrin mutations, elevated IgE and eosinophilia

A

Atopic Dermatitis

25
Q

What pathology? common skin disease at any age, majority before age 5, associated with xerosis and history of atopy (asthma, allergic rhinitis)

A

Atopic Dermatitis

26
Q

What pathology? erythematous papules and thin plaques with scale, involving the dermis and epidermis, often bilaterally

A

Stasis dermatitis

27
Q

What pathology? erythematous papules with wavy threat-like burrows with symmetric distribution, especially in interdigital webspace of hands, flexural wrist, waist, genitalia, buttocks

A

Scabies

28
Q

What pathology? grouped vesicles on an erythematous base in a dermatomal distribution

A

Zoster (Shingles)

29
Q

What pathology? grouped vesicles on an erythematous base resulting from an enveloped dsDNA virus

A

HSV

30
Q

What pathology? histology shows hyperproliferation of epidermis with elongation of rete ridges

A

Psoriasis

31
Q

What pathology? honey-colored lesion with yellow crust most commonly affecting the face

A

Non-bullous impetigo

32
Q

What pathology? hyperkeratotic papillomas with punctuate black dots

A

HPV

33
Q

What pathology? Hyperlinearity of palms

A

Atopic Dermatitis

34
Q

What pathology? ill-defined, non-palpable area of painful erythema, most commonly with lymphangitic streaking

A

Cellulitis

35
Q

What pathology? Infestation accentuated at night or by hot baths/showers

A

Scabies

36
Q

What pathology? initially erythematous maculopapular rash; thin walled vesicles on erythematous base with different stages of development present

A

Varicella

37
Q

What pathology? intense pruritis and erythematous papules, especially on trunk, caused by infestation

A

Body lice

38
Q

What pathology? Intense pruritis limited to genital hair, caused by infestation

A

Genital lice

39
Q

What pathology? intense pruritis with erythema and scaling limited to scalp, nape of neck and behind ears

A

Head lice

40
Q

What pathology? Manifests as a delayed type hypersensitivity reaction mediated by T -cell reactions

A

Allergic Contact Dermatitis

41
Q

What pathology? manifests as a immediate type hypersensitivity reaction mediated by IgE antibodies

A

Urticaria

42
Q

What pathology? may have bullae, pustules, or hemorrhagic necrosis as well as systemic symptoms

A

Erysipelas

43
Q

What pathology? nits are tan-brown oval eggs attached to hair shafts

A

Head and Body lice

44
Q

What pathology? non-enveloped dsDNA virus typically manifesting as verruca vulgaris

A

HPV

45
Q

What pathology? Non-pruritic papulosquamous lesions that may have scaling and moth-eaten alopecia

A

Syphilis

46
Q

What pathology? Primary lesion of a papule that produces an oval indurated ulcer, followed by split papules at oral commissures and annular face lesions

A

Syphilis

47
Q

What pathology? Scaly erythematous plaques frequently on hands, elbows, forearms, knees, and feet

A

Psoriasis

48
Q

What pathology? sharply demarcated area of erythema with non-pitting edema most commonly confined to the face

A

Erysipelas

49
Q

What pathology? Superficial flaccid blister that may have pus that progresses to collapsed blisters with varnish-like appearance

A

Bullous impetigo

50
Q

What pathology? Type IV delayed-type hypersensitivity reactions usually start 24-48 hours after exposure but can be delayed longer, most are weak allergens that require repeat exposure for sensitization

A

Allergic Contact Dermatitis

51
Q

What pathology? warm, tender, erythematous patches or plaques, involving the dermis and subcutaneous tissue, typically unilaterally

A

Cellulitis

Disease and Defense (16 decks)

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