Dyschromia

Dyschromia
Classification and external resources
ICD-10	L81.9
ICD-9	709.0
DiseasesDB	29542

Dyschromia refers to an alteration of the color of the skin^[1] or nails.

"Hyperchromia" can refer to hyperpigmentation,^[2] and "hypochromia" can refer to hypopigmentation.^[3]

"Dyschromatoses" involve both hyperpigmented and hypopigmented macules.^[4]

References

vitiligo:	Quadrichrome vitiligo Vitiligo ponctué

syndromic	Alezzandrini syndrome Vogt–Koyanagi–Harada syndrome

melanocyte development:	Piebaldism Waardenburg syndrome Tietz syndrome

albinism:	Oculocutaneous albinism Ocular albinism

melanosome transfer:	Hermansky–Pudlak syndrome Chédiak–Higashi syndrome Griscelli syndrome Elejalde syndrome Griscelli syndrome type 2 Griscelli syndrome type 3

other:	Cross syndrome ABCD syndrome Albinism–deafness syndrome Idiopathic guttate hypomelanosis Phylloid hypomelanosis Progressive macular hypomelanosis

Leukoderma w/o
hypomelanosis

Ungrouped

Reticulated	Dermatopathia pigmentosa reticularis Pigmentatio reticularis faciei et colli Reticulate acropigmentation of Kitamura Reticular pigmented anomaly of the flexures Naegeli–Franceschetti–Jadassohn syndrome Dyskeratosis congenita X-linked reticulate pigmentary disorder Galli–Galli disease Revesz syndrome

Diffuse/ circumscribed	Lentigo/Lentiginosis: Lentigo simplex Liver spot Centrofacial lentiginosis Generalized lentiginosis Inherited patterned lentiginosis in black persons Ink spot lentigo Lentigo maligna Mucosal lentigines Partial unilateral lentiginosis PUVA lentigines Melasma Erythema dyschromicum perstans Lichen planus pigmentosus Café au lait spot Poikiloderma (Poikiloderma of Civatte Poikiloderma vasculare atrophicans) Riehl melanosis

Linear	Incontinentia pigmenti Scratch dermatitis Shiitake mushroom dermatitis

Other/ungrouped	Acanthosis nigricans Freckle Familial progressive hyperpigmentation Pallister–Killian syndrome Periorbital hyperpigmentation Photoleukomelanodermatitis of Kobori Postinflammatory hyperpigmentation Transient neonatal pustular melanosis

Other
pigments

iron:	Hemochromatosis Iron metallic discoloration Pigmented purpuric dermatosis Schamberg disease Majocchi's disease Gougerot–Blum syndrome Doucas and Kapetanakis pigmented purpura/Eczematid-like purpura of Doucas and Kapetanakis Lichen aureus Angioma serpiginosum Hemosiderin hyperpigmentation

other metals:	Argyria Chrysiasis Arsenic poisoning Lead poisoning Titanium metallic discoloration

other:	Carotenosis Tattoo Tar melanosis

Index of skin

Description	Anatomy Physiology connective tissue Development

Disease	Infections by morphology Vesiculobullous Dermatitis and eczema factitial Papulosquamous Urticaria and erythema Radiation-related Pigmentation Mucinoses Keratosis, ulcer, atrophy, and necrobiosis Vasculitis Fat Neutrophilic and eosinophilic Congenital Neoplasms and cancer nevi and melanomas epidermis dermis Symptoms and signs eponymous Terminology

Treatment	Procedures Drugs antibiotics disinfectants emollients and protectives itch psoriasis other Wound and ulcer