I had a year long case of skin fungal infection  last year and nd still have breakouts now and then when my sweating increases due to hyperhidrosis. My main affected parts were the groin region and region between scrotum and anus. Even though the issue has subsided considerably, now I have got dark/grey skin patches on the affected parts. I have a couple of patches on my arm as well which was due to the side effects of ghe medicines that were prescribed. The affected skin is very dry and smooth and some times it may start itching. What can be done about it?