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31 Cards in this Set
- Front
- Back
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What condition is characterized by:
-fine pink scales -acute, benign, self-limited maculopapular eruption -common in spring/fall -most cases between 10-35 y.o. -clustering is typical -?herpesvirus etiology -lifelong immunity usually follows episode? |
pityriasis rosea
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T/F
pityriasis rosea appears as contagious? |
false
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What does pityriasis rosea begin with?
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Hearld patch-larger 2-4 cm scaly ellipitical lesion, with its long axis following tyhe lines of zahn
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Because the hearld patch often exhibits central clearing, and is therefore frequently confused with __?
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tinea corporis
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__ patch most commonly on trunk, neck or extremeites but may be hidden.
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herald
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T/F
lack of herald patch rules out pityriasis rosea. |
false, it does not rule it out
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Where do subsequent pityriasis rosea lesions look like and where do they appear?
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smaller, eliptical to circurlar on trunk, neck and limbis in an "old fashioned one piece bathing suit" distribution
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lesions follow the skin tension lines, creating the characteristic "_____"pattern on the trunk...indicative of...?
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christmas tree pattern indicative of pityriasis rosea
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What are the clinical manifestations of pityriasis rosea?
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itching is usually minimal
self-limited course 6-8 weeks post-inflammatory hyperpigmentation changes can occur exp. in dark skinned persons immunity usually makes recurrences rare. |
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What is inverse pityriasis?
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rash in groin, axillae or extremities
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inverse pityriasis can occur as a result of drug rxn's to what meds?
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barbiturates, clonidine, isotretinoin, metronidazole
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Definition: An idiopathic, generally asymptomatic, semicirular to ring-shaped dermal papules often composed of granulomas which coalesce to form circular plaques missed dx as ringworm, that is chronic in adults female>male, often self limited in kids....
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granuloma annulare
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What type of mediated rxn is granuloma annulare?
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type IV-cell mediated immunity
type III-immune complex vasculitis dysfunction of tissue monocytes |
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Lesion description: what is it?
-red, firm dermal papules, without scale -may have central clearing that may be confused with tinea. -lesion centers may show hyperpigmentation -subQ nodules, resembling rheumatoid nodules may be present |
granuloma annulare
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What is the distribution of granuloma annulare?
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symmetrically, on dorsums of hands and feet, >elbows and trunk.
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What is your diagnosis?
-asymptomatic, subQ nodules may be seen on arms and legs that may be a cosmetic problem for some pts, clinical diagnosis is made???? |
granuloma annulare
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Definition: an uncommon idiopathic pruritic maculopapular eruption that has classically shiny, flat topped papules with violaceous color, polygonal shape and fine scales. affects primarily adults 30-60y.o., women>men, rare in peds and geriatrics.
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lichen planus
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lichen planus is mediated by what type immune rxn?
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type IV
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what other disease processes is lichen planus often associated with?
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hep c
chr. active hepatitis primary biliary cirrhosis |
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What are the 7 P's of Lichen Planus?
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-pruritic
-purple -planar -papules and plaques -polygonal -polymorphic -postinflammatory hyperpigmentation |
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What is a Kobner reaction? in lichen planus?
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isomorphic response, new lesions at site of truama, burns, or excoriations
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What are white, lacelike streaks, pathognominic for LP?
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wicham's straie
atrophic erosions, or ulcers on mucous membranes |
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What are common lesion distributions for lichen planus?
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wrists, forearms, dorsal hands, feet, and pretibials, scalp, trunk, and genitals
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Where may severly pruritic hypertrophic lesions most often appear with LPlanus?
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pretibial
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__ are commonly involved, and may be affected without skin involvement
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mucus membranes, tongue, gingiva, palate, or lips.
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Genital lesions commonly found in __. Wicham's striae may be found on glans penis or on vulva.
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men more commonly
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T/F
Lichen planus is unpredictable, often chronic for many years with remissions and recurrences typical. |
true
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Drug induced LP is associated with what meds?
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Gold, thiazides, ACEs, beta-blockers, furosemide, penicillamine, and antimalarials.
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LP can be associated with Hepatitis __.
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hepatitis C
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The presence of ___ is diagnostic of Lichen Planus.
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Wickam's striae
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What are the treatment recommendations for mild and severe LP?
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mild-topical potent steroids
severe-systemic steroids |
