"Black mold" usually refers to Stachybotrys, a particularly nasty strain of mold that produces tricothecene mycotoxins.
It is not always black, either; and yes many molds have a black color.
If you have lots of mold in your house, you might want to do some serious research on testing, proper, careful remediation, or relocation, because toxic mold + compromised immune system is a bad combo.
There are many threads on PR regarding mold (@
slayadragon has compiled a lot of very useful info)--some believe that mold is actually the cause or trigger for ME. Either way it is entirely unhelpful and unhealthful to live in a moldy environment, especially when trying to get well.