Black Mold Symptoms and Health Effects

Learn about black mold symptoms and health effects so that you can identify indicators of black mold exposure and black mold poisoning.

Price and stock could change after publish date, and we may make money off these affiliate links. Learn more.
By: Sean McEvoy
Mold infests the walls and floors of an old building

HGRM_mold-infested-room_s4x3

A mold infested room of an old building.

Photo by: Dariusz Majgier

Dariusz Majgier

Mold in homes can be a costly and dangerous problem, particularly when infestations of toxic black mold occur. The symptoms and health effects of black mold exposure and black mold poisoning cover a wide range of health problems, but understanding the indicators can help keep you and your family safe.

Toxic black mold, or Stachybotrys chartarum, as it's known to scientists, can release spores as it feeds on organic materials in common household materials like drywall, carpet, insulation or sub-flooring that have been exposed to moisture. These spores, if ingested or inhaled, can cause a range of unpleasant and even dangerous symptoms in humans.

The most common black mold symptoms and health effects are associated with a respiratory response. Chronic coughing and sneezing, irritation to the eyes, mucus membranes of the nose and throat, rashes, chronic fatigue and persistent headaches can all be symptomatic of black mold exposure or black mold poisoning.

In particularly severe cases of prolonged exposure, black mold health effects can be more dangerous. Often compounded by allergic reaction to the black mold spores, these symptoms can include nausea, vomiting, and bleeding in the lungs and nose.

Toxic black mold can be costly to remove, and black mold exposure and black mold poisoning can cause a wide range of health problems, some of them severe. Understanding black mold symptoms and health effects can help you and your family identify these indicators and take swift action to protect your health and your home.

Next Up

12 Health and Wellness Products to Help You Reach Your Goals This Year

Gear up for your New Year goals with top-rated fitness equipment and recovery gadgets.

The Best Organic Fertilizers for Long-Term Lawn Health

Looking for a more natural way to feed your grass? These organic lawn fertilizers support healthy soil and a greener, stronger lawn.

Our Favorite Gifts From Black-Owned Brands on Amazon

Pick the perfect present with gifts from Black-owned brands on Amazon.

27 Black-Owned Home & Lifestyle Brands We Love

Shop with a purpose — today and every day — by supporting these incredible Black-owned home decor brands.

How to Grow Aloe Vera

Grow this healing succulent in your garden or on your windowsill for its many health benefits.

Wayfair's Biggest Annual Sale, Way Day, Features Deals Up to 80% Off

During Wayfair's biggest sale of the year, get Black Friday-level deals on summer essentials!

How to Use Color Psychology in Your Home

Find out how choosing the right colors for your home can enhance your mood, emotions and even your health.

The 8 Best Air Purifiers of 2026, Tested and Reviewed

Breathe easier in your home by adding a top-rated air purifier that reduces dust, mold, pet dander, smoke and odor.

Buy Cookbooks From Black Chefs and Authors

Add more diversity, variety and flavor to your culinary library with cookbooks and reads from renowned Black chefs and authors.

7 Best Clothes Steamers of 2026, Tested and Reviewed

Quickly and efficiently get rid of pesky wrinkles in your clothes — without lugging out the ironing board — with one of these editor-tested and -approved steamers. Plus, learn about the many health benefits of using a clothing steamer on items throughout your home.

Go Shopping

Get product recommendations from HGTV editors, plus can’t-miss sales and deals.

On TV

About HGTV

HGTV’s expert editors and writers share home decorating, garden and home improvement ideas, inspiration and advice based on our brand’s 30+ years of expertise and experience. We also give you the latest updates on HGTV shows and stars, cleaning tips and shopping recommendations. Learn more about us and our editorial standards.