Medically reviewed by Marisa Garshick, MD White spots on the skin can be caused by sun exposure or conditions including milia ...

black and white lichen and more. Black spots, typically caused by algae, moss, or mould, can make patios appear dirty and neglected and are notoriously hard to remove. Black spots cause problems ...

Check the asymmetry, color, diameter, and how the spot changes over time to ensure it's not cancer. Sunspots are flat, dark spots that appear on parts of your skin that you frequently expose to ...