hypermelanosis

hypermelanosis

(hi?per-mel-a-no'sis)
One of several disorders of melanin pigmentation resulting in increased melanin in either the epidermis (melanoderma), in which case the coloration is brown, or in the dermis, in which case it is blue or slate gray (ceruloderma). This disorder may be caused by a number of diseases and conditions, including pregnancy, ACTH-producing tumors, Wilson's disease, porphyria, biliary cirrhosis, chronic renal failure, certain drugs, suntanning, and chronic pruritus.
See: hypomelanosis

hypermelanosis

hyperpigmentation.
References in periodicals archive ?
Other dermatoses observed in this study were Lichen striatus, Linear Lichen planus, inflammatory Linear verrucous epidermal nevus, Lichen nitidus, Paederus dermatitis, Hypomelanosis of Ito, Linear and Whorled nevoid hypermelanosis.
Melasma is a common, acquired hypermelanosis that occurs in sun-exposed areas, mostly on the face, occasionally on the neck, and rarely on the forearms.
Melasma (also known as chloasma or mask of pregnancy) is an acquired, chronic, symmetrical hypermelanosis, characterized by brown patches of variable darkness on sun-exposed areas of the body.
Addison's disease, Peutz-Jeghers syndrome) Palmoplantar Due to localized hypermelanosis hyperpigmentation * Polymorphous brown macules with sharp or indistinct borders * Creases on the palms often present with hyperpigmentation; may contain hyperkeratotic papules or pits.
There may also be hyperpigmentation of the buccal mucosa that may be reactive postinflammatory hypermelanosis.
Melasma, also known as Chloasma or mask of pregnancy is an acquired, chronic, and symmetrical hypermelanosis, characterized by brown patches of variable darkness on sun exposed areas of body [1].
Effect of Artemia nauplii enriched with vitamin-A palmitate on hypermelanosis on the blind side in juvenile Japanese flounder Paralichthys olivaceus.
Gupta N, Sharma MC, Ramam M, Kabra M: Familial progressive hypermelanosis in Indian monozygotic twins.
6%); confirmed or probable linear and whorled nevoid hypermelanosis (10.
Acquired hypermelanosis forms on sun-exposed areas, most notably the cheeks.
2,3 Melasma is a relatively common, acquired symmetric hypermelanosis characterized by irregular, light to gray brown macules and patches involving the sun exposed areas of the skin.