There are more than 5,000 varieties of mold, but including dozens of varieties that are toxic to humans and about 150 that can cause allergic reactions. Once mold starts growing on drywall, carpets, insulation, ceilings or wallpaper, it's difficult--if not impossible--to eradicate. If you've been sickened as a result of mold exposure at home or work, you may be entitled to compensation. Talk to a personal injury attorney with mold litigation experience. Your lawyer can assess the viability of your case and file a lawsuit on your behalf, if appropriate. If your claim is successful, you may receive money to help pay for medical expenses and property damage.