1Osswald SS, Proffer LH, Sartori CR. Erythema dyschromieum perstans: a case report and reviewlJ]. Cutis, 2001, 68(1): 25-28.
2Vega ME, Waxtein L, Arenas R, et al. Ashy dermatosis and lichen planus pigmcntosus: a clinicopathologic study of 31 cases [J]. Int J Dermatol, 1992, 31(2): 90-94.
3Penagos H, Jimenez V, Fallas V, et al. Chlorothalonil, a possible cause of erythema dyschromicum perstans (ashy dermatitis) [J]. Contacl Dermatitis, 1996, 35(4): 214-218.
