Hi, Welcome to HealthcareMagic Forum.
Do you have any itching there? Your History suggests, you either have Leucoderma
, where your skin produces less melanin
pigment or it could be tinea Versicolor
, which is the Fungal infection
of skin. You should be getting yourself examined by a Dermatologist
, so that he can examine you thoroughly and run few tests if necessary. Eat healthy nutritious balanced diet which should include fresh fruits and green leafy veggies. Apply a Sunscreen with an SPF of at least 30 when you go out in the sun. Treatment will depend upon the cause and your Treating Doctor would know better.
Wish you Good Health, Take Care.