I have purple scrubs that turn pink in warmer areas like around my neck, under the armpits and crotch areas. I have not even washed them yet, what can this be from? Is there something wrong with my skin and or sweat? Really weird being they are new and never been washed. This only happens with my purple scrubs, no other color.

Is it possible that its not turning color as much as you think? Its just the salts from your sweat are making it appear discolored? Have you washed them yet and did the color return?

Wash them before you wear them. You need to get the extra dye out of them prior to wearing them.

You should try grey's anatomy scrubs they tend to last longer and not fade in the wash and they are super comfy.