dark patches

I've had dark patches around my mouth on both sides for some time, the only time you can't see them is when i smile because it creases and covers that area. I wonder what it could be as i've been using rosehip oil on it  but that seems to be doing nothing. I recently found out i was vit D deficient, could this be the cause?

[Bhupinder Kaur, MD]

Hello,
Lack of vitamin D cannot cause such dark pigmentation but it can be due to hyperpigmentation of the skin. This darkening occurs when an excess of melanin, the brown pigment that produces normal skin color, forms deposits in the skin.

Treatment involves hydroquinone, azelaic acid, corticosteroids, tretinoin cream and laser treatment. Pls discuss these options with your dermatologist before using them.

I hope it helps. Take care and regards.