brown skin pigmentation

Two new things going on that I've not had till lately.
And, my AF has gotten worse, so going to try a different route soon as money permits.

But, as I've been out in the sun on nice cool days, sitting in the backyard, after, noticed my arms had patches of skin pigmentation "blotches" of darker brown areas and others more white.
Can't figure why.
Also, now have more severity of joint pain and stiffness, soreness, and moving them I'm hearing crackling sounds.
I know this is not a good signe at all, as inflammation is bad, do to the low cortisol.
WOndering if Curcumin (Turmeric) would help. I've heard a lot of good things about this spice.

Pauleette