I have a spot on my lower left back its indented with lil color sometimes lools like a bruise and getting bigger what is this?

Skin lesion: Have pcp or dermatologist examine the lesion. Melanomas r characterized by irregular/indistinct borders, multiple colors, elevated, increasing size. So best to have it checked. If borders are regular, distinct, uniform color, may just be a mole. Since it's getting larger, best to have it checked.

It's best for u to: Have a dr or a dermatologist see your skin lesion for an accurate diagnosis.It could be anything - wart, mole, blood vessel, eczema etc. Take care !