age spots and white patches on upper back. they are brown, gray, or black spots and also called liver spots, senile lentigo, solar

abnormal adult age aging asian back black body brown changes closeup color damage dark discoloration discolored discolouration disease dry elder elderly health hypopigmentation hypopigmentations lentigines lentigo liver man melanin nape old patches pigment pigments problem senile shoulder skin small solar spot spots sun surface tan texture tiny trunk uv white