The itchy rashes could either be due to the Candida toxins, or dry skin due to your adrenals/thryoid.
I have recently had itchy dry skin mostly in the evenings every other week. Seems ok now. Try moisturising, that should help.
I don’t know if it’s the candida because I’m still not getting many other symptoms, so I know I’m on the right course.
Are you detoxing at all? Using adrenal supporting supplements and/or nettle leaf/ginger teas? These would all help.
Gentle exercise has helped me a lot in the past.