Thank you for writing back.
1. This seems to be a mole or an age spot / freckle
which occurs on exposure to sunlight. There is no cause for worry.
2. Get a Skin Specialist's opinion. Lightening of the spots may be possible by laser
, radio-frequency or cryosurgery
I hope that I have answered your queries. If you have any further questions, I will be available to answer them.