If mold is present in your home and there are mold spores floating about they can land on the paper face on your drywall. Before you know it the mold can multiply and start spreading across the whole wall and even into the wall cavity where it will start to feed on the wood framing and flooring.
Luckily drywall/ Sheetrock mold scenarios can be easily handled. It is usually possible to remove mold on drywall that is under 10 square feet. If you have a larger infestation you may require a pro.
You can get rid of smaller infestations of mold on Sheetrock and drywall. Mold needs moisture, adequate temperatures and a food source to survive, so when you are tackling any mold infestation you can start by taking away one or more of these factors to make it more difficult for the mold to survive.
That being said, do be aware that this may not work for every type of mold, as there are many types of mold, and some types of mold even have multiple species, some of which are a little more resistant to environmental changes than others. While some may die the minute you take away one of their resources, others may not budge.
The first step to tackling any mold infestation is to know exactly what kind of mold you are dealing with. If you know its name, you can know its weaknesses and when you know how it survives you can get rid of it forever.