Thanks for writing to us.
From your description they seem to be a pigmentation spots and lines that are benign in nature. These spots usually do not grow and remain like that for years. You can self monitor them for any change in size, shape, color, texture, irregular margins, redness
or ulceration- if these appear then you need to have treatment.
I hope this information has been both informative and helpful for you.
Dr. Rakhi Tayal