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'''Post-inflammatory pigment alteration''', abbreviated '''PIPA''', is benign dermal pigmentation change. It may be either hyperpigmentation or hypopigmentation.<ref>{{Cite journal | last1 = Cardinali | first1 = G. | last2 = Kovacs | first2 = D. | last3 = Picardo | first3 = M. | title = Mechanisms underlying post-inflammatory hyperpigmentation: lessons from solar lentigo. | journal = Ann Dermatol Venereol | volume = 139 Suppl 4 | issue = | pages = S148-52 | month = Dec | year = 2012 | doi = 10.1016/S0151-9638(12)70127-8 | PMID = 23522630 }}</ref> | '''Post-inflammatory pigment alteration''', abbreviated '''PIPA''', is benign dermal pigmentation change. It may be either hyperpigmentation or hypopigmentation.<ref>{{Cite journal | last1 = Cardinali | first1 = G. | last2 = Kovacs | first2 = D. | last3 = Picardo | first3 = M. | title = Mechanisms underlying post-inflammatory hyperpigmentation: lessons from solar lentigo. | journal = Ann Dermatol Venereol | volume = 139 Suppl 4 | issue = | pages = S148-52 | month = Dec | year = 2012 | doi = 10.1016/S0151-9638(12)70127-8 | PMID = 23522630 }}</ref> | ||
'''Post-inflammatory hyperpigmentation''' and ''' | '''Post-inflammatory hyperpigmentation''' and '''post-inflammatory hypopigmentation''' redirect here. | ||
==General== | ==General== | ||
Clinical DDx: | Clinical DDx: |
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