Vitiligo
The loss of pigmentation in the skin is called Hypo-pigmentation and the total loss of skin pigment is called Albinism.
Yes. The color of a black eye is not related to skin pigmentation.
They are albino Black Bears (They lack pigmentation)
melanin
The medical term for bluish-black marks on the skin caused by hemorrhages into the skin is "ecchymosis."
They can. Black on the tongue is due to extra pigmentation, something every dog breed can experience, including pugs.
Argyrosis is a condition in which prolonged exposure to environmental silver leads to a black pigmentation of tissue.
There is none. It is just the pigmentation of their feathers. A mother pigeon who has brown feathers is likely to lay an egg with a pigeon inside it of similar pigmentation, just as a black woman will probably give birth to a black child.
melan-, as in melena (black stools) or melanocyte (pigment-producing skin cell).Melan- or Nigra-
No, they are pre-cancerous keratoses or cancerous melanomas. If they are melanomas they can kill you in 3 months if not removed. Go to a skin doctor now
The medical term for black skin is "hyperpigmentation." This refers to a condition where patches of skin become darker than the surrounding area due to an excess production of melanin.