Molluscum contagiosum/Molluscum ID or Dermatitis Flashcards
What is MC?
Self limited pox-virus inf of the skin usually spread through direct skin to skin contact of the involved area or autoinoculation
How does MC typically present?
1-3 mm pale or skin-colored papules w/ central umbilication, usually on face, extremities and trunk
What is Molluscum Dermatitis or “id” reaction
Eczematous dermatitis around MC lesions
What is the prevalence of Molluscum Dermatitis?
Estimated 9-39%, but could be higher bc this often precedes regression and many cases go undocumented
What causes Molluscum Dermatitis?
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
Biospy findings in Molluscum Dermatitis?
Molluscum bodies and an eczematous inflammatory infiltrate in the dermis
Risk factors for MC?
- Frequent use of public pools or baths, 2. Male gender, 3. Tropical climates, 4. Immunosuppression
How do you Dx MC?
Clinical examination of the skin, also using a Dermatoscope or magnifier if available, siblings or close friends w/ recent Hx MC, Biopsy typically unnecessary
What is the natural course of MC?
Resolves on its own within a few months to years
How do you Tx MC?
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
Are destructive measures good for MC?
No, since it may cause scarring and this does not shorten the course of the inf