Most types of toxic mold develop from a water or moisture source. 

I have, although, seen some laminates that are not very moisture friendly and will swell at the seams over time just from damp mopping and they will scratch rather easily.

- Water-Resistant: Ideal for kitchens and bathrooms due to its resistance to moisture

Lastly, once the walls are installed, pack out the rest of the studs using1/4" plywood to account for the nailing flange, then use green board ( moisture resistant Sheetrock)to finish

When moisture gets pulled through concrete as it breaths it will eventually cause the epoxy to fail (epoxy & moisture = oil & water).

This will let you know if there are any plumbing leaks or any clogs in the sewer lines.2nd look at the foundation very closely, look for any stress cracks and see if any moisture coming in.3rd check out the HVAC systems.

IE if you patch the drywall, 3-6 months later you will have drywall cracks again if you dont get the underlying foundation fixed, and begin to maintain the moisture levels around the house.6)Almost all old houses will have current or past issues with termites.

Over time the wood is going to expand and contract with changing temperature / moisture levels and eventually will begin to bow outward and fail.

Should any moisture barrier have been installed?

This tool pointed out areas inside drywall that have had moisture issues.