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→Pigmentation disorders
==Pigmentation disorders==
==Pigmentation disorders==
===Hypopigmentation===
===Hypopigmentation===
*Leukoderma or vitiligo - loss of pigment in the skin
*Leukotrichia - loss of pigment of the hair
*Hypopigmentation or incomplete albinism - generalised reduction of pigment in skin or hair
*Albinism - inherited lack of pigment
*Dilution - reduced pigmentation
*Can be localised or generalised, idiopathic or asociated with other diseases
*Examples of hereditary conditions: Maltese dilution of cats, Chediak-Higashi syndrome, leukoderma and leukotrichia of Dobermans, Arabian fading syndrome
*Asociated with some immune-mediated disorders, ''e.g.'' [[Skin Immunologic - Pathology#Lupus|discoid lupus erythematosu
===Hyperpigmentation===
===Hyperpigmentation===
==Eosinophilic infiltration==
==Eosinophilic infiltration==
===Eosinophilic plaques===
===Eosinophilic plaques===