Black mold is a toxic mold that can cause respiratory complications and allergic reactions in people who come in close contact with it. While many molds are black, the term usually refers to Stachybotrys chartarum. It grows readily in homes, so understanding its health risks matters.
How Black Mold Harms Health
Black mold is dangerous because of trichothecene mycotoxins carried throughout the mold. When the mold reproduces, it releases spores into the air. Inhaling those spores lets the mycotoxins enter the body, where they can trigger several kinds of harm:
- Respiratory disease, including hypersensitivity pneumonitis, rhinitis, and nasal infections, with flu-like coughing, shortness of breath, and fever
- Allergic reactions resembling hay fever, such as nasal congestion, frequent sneezing, dry cough, and itching in the throat, mouth, ears, and nose
- Chronic illness, since the body can retain mycotoxins and develop lasting complications after exposure ends
- Poisoning symptoms like inflammation, brain fog, dizziness, blurred vision, fatigue, sleep problems, and body aches
Black mold can be especially harmful to infants, where exposure may interfere with a newborn’s development.
Who Faces the Greatest Risk
Black mold can affect almost anyone, but the risk is higher for people with respiratory conditions like asthma or COPD, people allergic to mold and airborne fungi, people with heavy or prolonged exposure, and people with weakened immune systems. For most others, symptoms are not severe and often ease soon after contact stops, sometimes with an antihistamine or decongestant a doctor prescribes.
Treating and Preventing Exposure
The first step is removing the mold. If a case is severe, avoid the affected room, seek temporary lodging if needed, and block the HVAC from spreading spores to other rooms. Nasal irrigation with a saline spray or sinus rinse can help clear trapped mycotoxins. See a physician for severe symptoms, where skin-prick or blood tests can confirm a mold allergy.
Black mold grows where spores meet moisture, so bathrooms, basements, laundry rooms, kitchens, and any room with water leaks are common trouble spots. If you rent, your landlord is generally responsible for removing mold on the premises, and may owe compensation for resulting harm if they were notified and failed to act within a reasonable time.
A premises liability lawyer can assess whether your mold injuries support a claim.