Leukocytoclastic vasculitis sparing a tattoo with halo effect

Nevus anemicus: An island of sparing in the setting of drug-induced hypersensitivity

“…However, sparing phenomenon in the setting of generalized drug rash remains a poorly understood entity and has been reported in only a handful of cases including sparing of a leprosy macule in ampicillin hypersensitivity rash, sparing of leprosy patch in dapsone hypersensitivity syndrome, nafcillin-related leukocytoclastic vasculitis sparing a tattoo, and phenobarbital drug rash sparing NDP. 8 , 9 , 10 , 11 Of previously reported cases, local immune dysfunction was consistently posited as a potential pathophysiologic mechanism of skin disease sparing. Therefore, sparing of NA may be more complex than what available research suggests.…”

Reverse koebnerization of primary cutaneous follicle center lymphoma following skin biopsy

“…Reverse koebnerization, although rare, has been reported in dermatologic conditions such as granuloma annulare, leukocytoclastic vasculitis, and bullous pemphigoid, which can be induced by a skin biopsy, tattooing, or tight clothing. 6 , 7 , 8 The infrequent and diversified nature of this phenomenon causes difficulties in elucidating a plausible mechanism.…”

Koebner phenomenon in leukocytoclastic vasculitis: A case report and an updated review of the literature

“…15 Interestingly, there have also been two case reports on the topic of reverse KP in LCV, in which skin lesions have disappeared at the sites of trauma. 5,16…”

“…LCV is a neutrophilic small vessel vasculitis resulting from the deposition of circulating immune complexes. 5 HSP is a common small vessel vasculitis, which is characterized specifically by IgA-mediated blood vessel injury affecting multiple sites. 6 A comprehensive literature review of reports published in the English language revealed a total of nine reports on KP in LCV.…”