Reticulate pigmentation, which is characterized by a mottled appearance and variation in the size and pigmentary content of lesions , is seen in reticulate acropigmentation of Kitamura, confluent and reticulated papillomatosis of Gougerot, and Carteaud and other rare dermatoses.
Dyschromatosis symmetrica hereditaria (DSH), also known as acropigmentation of Dohi, was first described by Toyama in 1910 as an unknown hyperpigmentation disorder of the distal extremities .
Reticulate acropigmentation of Kitamura (RAPK) is a rare pigmentary disorder.
Choudhary, "Reticulate acropigmentation of dohi: A case report with insight into genodermatoses with mottled pigmentation," Indian Journal of Dermatology, vol.
Nishikawa, "Dyschromatosis symmetrica hereditaria (reticulate acropigmentation of Dohi): Report of a Japanese family with the condition and a literature review of 185 cases," British Journal of Dermatology, vol.
Hirokawa, "A special form of acropigmentation: acropigmentation reticularis," Der Hautarzt; Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete, vol.
Griffiths, "Reticulate acropigmentation of Kitamura," British Journal of Dermatology, vol.
Sudogan, "Reticulate acropigmentation of Kitamura: report of a familial case," Dermatol Online J, vol.
It comprises of a spectrum of diseases which include dyschromatosis universalis hereditaria (DUH) or acropigmentation of Dohi and segmental form called unilateral dermatomal pigmentary dermatosis (UDPD).1,2,3 Dyschromatosis symmetrica hereditaria (DSH) was first reported as a clinical entity by Toyama in 1929.4 It is characterized by symmetrical distribution of hyperpigmented and hypopigmented macules on the extremities more so over the dorsum of hands and feet.
The various acral RPD include reticulate acropigmentation of Kitamura, acropigmentation of Dohi, acral melanosis and heterochromia extremitarium.
Causes of adult-onset reticulate pigmentation are different and include dirty neck in atopic dermatitis, reticulate pigmentary anomaly of flexures, reticulate acropigmentation
of Kitamura, reticulate acropigmentation
of Dohi, LP pigmentosus, drug-induced reticulate pigmentation, ashy dermatosis, pigmented contact dermatitis, prurigo pigmentosa, systemic sclerosis, Galli-Galli disease and erythema ab igne.5,8