People have a rapid loss of pigment in beginning of disease. (skincareof.com)
However, when the animals are exposed to intense light for extended periods of time, which is unlikely to occur in the wild, porphyrin production leads to loss of the pigment cells. (elifesciences.org)
Vitiligo is a kind of disease that is result of loss of pigment that gives color to skin and creates white spots on the skin. (skincareof.com)