Possibly cholinergic urticarias.
Canesten creme could help in tinea.But if it is age based pigmentation this will not help.If so can try aloe vera gel.But both these conditions do not start overnight,so would be happy to receive a photo to make a better comment.
Unfortunately there is no cure for keloids as of now,but just to reduce the size and symptoms there are methods.
Measles will have rash flush with skin.You have mono morphic acne precipitated by steroid.It will resolve on its own.No antifungals are indicated.
I would rather go in for internal suppliments like Bcarotene which act as good.I am wary of external applications due to their unpredicablity.
Minoxydil applications do help.Iron deficiency,thyroid problems if they are the cause when corrected improve the hair,so do nutritional factors.