Often called "black mold", stachybotrys chartarum can produce allergens and irritants. If you suspect that you have a mold issue, your best course of action is to make sure you do not disturb it, and get a mold test as soon as you can. We did a mold test in Newtown PA recently. We suspect that they have a mold problem there, and will test to see what types of issues they may be facing. They had a water intrusion several months ago, and the home was not treated for mold at that time. The first step, of testing, will give us more information on how to proceed.
Write something about yourself. No need to be fancy, just an overview.