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It is useful to know the prognosis of disease that have not cure, but often "burn themselves out":
Disease:
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Spontaneous resolution:
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Recurrence:
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alopecia areata
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3mos to 2 years
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chronic urticaria
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avg 3-5years
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e. nodosum
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3-6 weeks
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GA
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(>50%) <2years
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common
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Henoch-Schonlein purpura
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2 weeks
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often recurs with URI
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JXG
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3-6 years
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lichen planus
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1 year
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often but not multiple
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lichen striatus
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~ 2 years
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pityriasis alba
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pityriasis rosea
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4 – 12 weeks
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yes
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PRP
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1-3 years
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sarcoid
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scleredema
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6 months – 2 years
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