White Spots on Face from Accutane?

I have been on Accutane (Claravis) 30 mg once a day and I only took it for 15 days so far. Recently, I've noticed some white spots (spots lighter than my skin tone) on my face. I do play a lot of tennis so I've been spending a lot of time outdoors in the sun. I'm Indian so my skin tone is naturally darker so a sun burn or excessive sun exposure has never been a problem for me and even my dermatologist told me it won't be a problem for me. Is it the Accutane causing these white spots on my face?