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Avatar universal

Pigmentation question

I just wanted to ask before my appt. with pit specialist on Tue. - is a tan line on chest unusual, or normal?  It's only on upper chest.  I live in the Northeast, so haven't been out in the sun since August.  I'm not super tan.  Just light tan.
My tan has always persisted for as long as I can remember - in this area - and in my 20s, my arms.

Just dont' want to sound silly mentioning it to the pit specialist & maybe it's just normal.  My ACTH is normal and I have low cortisol.
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Avatar universal
Thanks Rumpled!

That's interesting about glucose causing it.  And the low cortisol.  Hmmm.

And the hair - I've noticed changes over the past 8 years or so.  Hair dye doesn't take the same way.  When you look at a piece of hair closely, you see stripes.  And recently I have these two little wings of red hair at the same exact spot on both sides.  I cut off the ends & removed it, and colored my hair afterwards, and those same spots appeared red again.  
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Avatar universal
Hyperpigmentation could be the ACTH (testing for it is often done incorrectly - mine varies by hundreds of points and the range at my lab is only 4-27).

It can also be glucose depending on where it is.

I only got a tan when my cortisol got low - as in my adrenals got removed. It started even before the ACTH got too high but at it gets higher, I get darker - my hair, everything. Ick.
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