Molluscum contagiosum/Molluscum ID or Dermatitis Flashcards

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1
Q

What is MC?

A

Self limited pox-virus inf of the skin usually spread through direct skin to skin contact of the involved area or autoinoculation

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2
Q

How does MC typically present?

A

1-3 mm pale or skin-colored papules w/ central umbilication, usually on face, extremities and trunk

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3
Q

What is Molluscum Dermatitis or “id” reaction

A

Eczematous dermatitis around MC lesions

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4
Q

What is the prevalence of Molluscum Dermatitis?

A

Estimated 9-39%, but could be higher bc this often precedes regression and many cases go undocumented

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5
Q

What causes Molluscum Dermatitis?

A

Cause unknown, but thought to be a T cell mediated delayed hypersensitivity reaction that represents an immunologic response to the virus –> inflammation of MC lesion -> eczematous rash

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6
Q

Biospy findings in Molluscum Dermatitis?

A

Molluscum bodies and an eczematous inflammatory infiltrate in the dermis

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7
Q

Risk factors for MC?

A
  1. Frequent use of public pools or baths, 2. Male gender, 3. Tropical climates, 4. Immunosuppression
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8
Q

How do you Dx MC?

A

Clinical examination of the skin, also using a Dermatoscope or magnifier if available, siblings or close friends w/ recent Hx MC, Biopsy typically unnecessary

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9
Q

What is the natural course of MC?

A

Resolves on its own within a few months to years

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10
Q

How do you Tx MC?

A

If Pt asymptomatic: observe, use emollients PRN and topical antibiotics if secondary infection
If Pt symptomatic (e. g. Pruritus): short course of low potency topical CS beneficial, but avoid long term Tx since it may delay resolution of viral inf

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11
Q

Are destructive measures good for MC?

A

No, since it may cause scarring and this does not shorten the course of the inf

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