Can You Tell How Bald a Thinning Area of Scalp Will Get?

If you start thinning in an area, does that mean that eventually that area will go completely bald or do some people thin to a certain percentage of orginial density and then it stops thinning and becomes stable? Is there any way of finding out how bald a particular area will go, even with a miniturisation test?

Yes, some people will thin to a percentage of their original density and then their hair loss stabilizes. There is no way to predict absolutely how much thinning will occur, but miniaturization mapping over time will give you some kind of idea… and taking medications like Propecia will slow the process down (for men).