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Oral pigmentation is asymptomatic and does not usually cause any alteration to the texture or thickness of the affected area. The colour can be uniform or speckled and can appear solitary or as multiple lesions. [1] Depending on the site, depth, and quantity of pigment, the appearance can vary considerably. [2]
Smoker melanosis in a patient consuming 2 packs of cigarette per day. Smoking or the use of nicotine-containing drugs is the cause to Smoker's melanosis. [10] [11] Tar-components (benzopyrenes) are also known to stimulate melanocytes to melanin production, and other unknown toxic agents in tobacco may also be the cause.
Melanosis, hyperpigmentation via increased melanin Ocular melanosis; Peutz–Jeghers syndrome, dark patches on the lips etc. Piebaldism, patchy absence of melanin-producing cells; Vitiligo, a skin condition which causes areas of the skin to lose its colour; Xanthochromism, an unusual yellow colouration in animals
"Hyperpigmentation just means darkening of the skin," says Dr. Dowling. "So basically, 'hyperpigmentation' is an umbrella term for lots of different conditions that cause hyperpigmentation ...
Dirt, dust, smoke, and other airborne pollutants can all impact the health of our skin and lead to wrinkles and pigmentation issues like dark spots. Ultraviolet (UV) radiation .
Laugier–Hunziker syndrome (/ ˈ l oʊ ʒ i eɪ ˈ h ʊ n t s ɪ k ər /) is a cutaneous condition characterized by hyperpigmentation of the oral mucosa, [1] longitudinal melanonychia, [1] and genital melanosis. [2] The hyperpigmentation presented in Laugier-Hunziker syndrome is benign and should be differentiated from Peutz-Jeghers syndrome.
Acanthosis nigricans—hyperpigmentation of intertriginous areas associated with insulin resistance. Melasma, also known as 'chloasma' or the “mask of pregnancy,” when it occurs in pregnant women.— It is a common skin problem that causes dark discolored patchy hyperpigmentation.
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