Hi Doctor. I'm A Black Male Who Lives In Windhoek-Namibia

Hi doctor.
I'm a black male who lives in Windhoek-Namibia and I have a concern.
The temperature of my body is different from my face's. Normally my face is hotter than the rest of my body, and when I'm in contact with the sun or walk under the sun my face absorbs a great amount of heat causing it to burn with the sun, and normally I'm not comfortable with my whole body for it works abnormally(heats too much, but the face heats more than the rest of the body)
My face became darker than the rest of my body. When I was a child I was light, Now I'm dark.

I hope I made myself clear andI'd appreciate if you give me a solution for my situation