the pigment in your skin
cyanosis
melanin
yes.cuz of the heat the sun causes on ur skin.
not washing the area or skin problems
Being born of European stock.
Vitiligo is an auto immune diseases. It causes loss of pigment melanin from skin which actually skin color as result skin divided in to two color 1 real and 2 white
it causes people tolook older than what they really are. It also causes age spots and brown spots -- wear sunscreen in the summer. Sunlight makes you wrinkly and makes you look old wayy before your middle ages.
being embarrassed,cold,weather,ice,the sun
continuous high level of blood sugar is a major cause.
Everyone has melanin, some more than others, melanin is a dark-colored pigment that happen's to give the skin a darkish color. Being outside in the sunshine causes an increase in melanin, darking the skin temporarily.(:
Skin color grayish.