First and foremost, it is necessary to distinguish age spots, cholasma and freckles.
Age spots are mostly caused by sunlight. In most cases, they are light brown and appear below eyes or at cheekbones.
Before age spots form, your skin will first experience pain, itch, and peeling, so they are also called sunspots.
The development of chloasma is mostly due to endocrine disorders. It is typically symmetrical, with matching marks on both sides of the face, so it is also called butterfly spot or melasma.
Freckles are generally on both sides of the nose and nose wings. These dark brown spots are usually in round, oval or irregular shapes. In most cases freckles are hereditary and appear at a very young age.