Sun exposure (UV rays) – Many times we go outside in the sun and pollution due to work or some other things, without covering the face so due to it the sun exposes the skin and as a result, pigmentation appears on the skin.
Hypersensitive reactions – Some of us have sensitive skin, if you applied topical medications then due to the reaction you may get pigmentation.
Various pharmaceuticals – Due to excess medication, you can be affected by pigmentation as so much medication can result in a reaction.
Hormonal changes – Hormonal changes is one of the common causes of pigmentation. It can affect anyone.
Hereditary – If anyone in your family is suffering from pigmentation then there are chances that you can get pigmentation as your ancestors have passed their genes to you.
Skin injuries – If you got some skin injury and when it recovers you can observe some pigmented area. So due to it also skin pigmentation is possible.
Yes, Sunscreen is a key part for pigmentation but only and only sunscreen cannot help you to reduce pigmentation. You have to use medications and some treatments according to your skin type. So that you can get rid of the pigmentation. I suggest you; consult a dermatologist nearby you so that he can guide you. Under his guidance, you can get better results.
There are treatments like Chemical peels, Q-switch laser, cocktail therapies, etc. to treat pigmentation. If you follow the treatments and medications given by your dermatologist then you could get results in 3-4 months on average.
If your problem is not that serious then you can use SPF 50 sunscreen.
Thank you for your valuable question. As your biopsy reports revealed, you are having Lichen Planus Pigmentosus skin problem. This condition is autoimmune inflammatory skin condition in which dark pigmented...