Yes, mold behind walls can absolutely make you sick because it releases invisible mold spores, mycotoxins, and Microbial Volatile Organic Compounds (MVOCs) (like smelly gases) that travel through wall cavities, electrical outlets, and cracks, causing allergy-like symptoms, respiratory issues (asthma, wheezing, coughing), headaches, fatigue, and more serious infections in vulnerable people. Hidden mold exposure, even without visible spores in the air, can lead to "sick building syndrome," with symptoms improving when you leave the environment.
You know mold might be making you sick if you experience allergy-like symptoms (sneezing, runny nose, itchy eyes, cough) or asthma flare-ups (wheezing, chest tightness) that worsen in damp indoor environments, along with potential fatigue, headaches, or neurological issues like brain fog, especially if others in the building have similar problems. A doctor's visit is crucial for diagnosis, particularly if symptoms are severe, persistent, or if you have underlying health conditions, as mold can trigger more serious infections in vulnerable people.
According to the CDC, people usually experience their first symptoms within 2 to 9 hours of their first exposure. On the other hand, some people could go for weeks or months before feeling sick if their exposure is limited enough. This is why it is also important to check damp, dark areas of your home for mold.
Here are 11 signs that may indicate the growth of hidden mold inside your home:
NEUROLOGIC: headaches of all types, including “icepick” (stabbing) headaches, “brain fog,” numbness, tingling, weakness, tremor, nerve pain, dizziness. MUSCULOSKELETAL: joint and muscle pain, muscle cramps, general weakness, tics, muscle twitches.
Mold toxicity warning signs often include persistent fatigue, brain fog (memory/focus issues), chronic sinus/respiratory problems (cough, congestion, wheezing), digestive issues (bloating, IBS-like symptoms), mood changes (anxiety, depression), neurological symptoms (numbness, dizziness, ringing in ears), skin issues (rashes, itching), and inflammation-related pain (joint/muscle aches, night sweats), with symptoms often improving away from home and worsening upon return, indicating an environmental link.
Urine mycotoxin tests are ideal for testing yourself (and your family members) for mycotoxin exposure. They're absolutely painless, totally non-invasive, and incredibly easy to use. With just a small amount of urine, our experts will be able to spot up to 15 different illness-causing mycotoxins.
If you're wondering what kills mold on walls, some of the best solutions are white vinegar, hydrogen peroxide, baking soda, bleach, and commercial mold removers. Note that you should only use a bleach solution when dealing with moderate to severe mold damage, and make sure not to combine bleach with other cleansers.
Stage 1: Mild Sensitivity – The patient will feel sneezing, nasal drip, fatigue. Level 2: Moderate Illness – Affected person face persistent coughing, rashes, brain fog. Stage 3: Chronic Exposure – An individual at this level will suffer from respiratory infections, mood disorders, memory loss.
Most often, a mold problem will be readily identified by a musty smell that becomes obvious in damp environments. Mold also likes to play hide and seek, so if you suspect there is a problem, then check under carpets, behind drywall, inside ductwork, in between bathroom tiles and in other moisture-prone areas.
To kill mold permanently, you must eliminate its food source (organic materials) and, most importantly, its need for moisture by fixing leaks and reducing humidity with a dehumidifier, while cleaning existing mold with agents like white vinegar, baking soda, hydrogen peroxide, or diluted bleach (for non-porous surfaces) and scrubbing thoroughly, but prevention is key by controlling water and air flow.
Cognitive Symptoms of Mold Exposure
Step-by-Step Guide on How to Test for Mold Inside Walls
Your air filter can help to purify the air, removing tiny mold spores. This can be a tremendous help, and soon you'll start to feel more comfortable. Note that not every air purifier can remove and purify mold; you should check to make sure that your air purifier can do the job.
Living in a moldy house can be risky, depending on how sensitive you are and the type of mold. Some people might not notice any problems, while others could get very sick quickly. Mold can cause a range of health issues.
What are symptoms and effects of mold exposure?
Medical Treatment for Mold Toxicity
Common approaches include: Antifungal Medications: These target mold growth within the body. Nasal Sprays: Helpful for those with respiratory symptoms. Immunotherapy: This can be beneficial for those with severe mold allergies.
These include:
Key Points. Do not paint over mold. Painting traps moisture, causing mold to grow underneath and damage paint and walls. Always remove mold first using vinegar or detergent, dry the surface completely, then apply mold-resistant primer and paint.
Professionals may scrub visible mold, clean absorbent materials with detergents and solutions, and use a high efficiency particulate air, or HEPA, filter vacuum cleaner or other equipment.
Health Risks Linked to Mold Behind Drywall
It can cause serious respiratory problems. People who breathe in mold spores often get respiratory infections. These infections can be very serious, especially for those with weak immune systems. Mold exposure can also cause allergic reactions.
Musty smell or other strange odors
A persistent musty smell is often one of the earliest signs of mold in a house. Mold often produces a musty odor before it's visible, allowing it to thrive in concealed spaces. This distinct odor may indicate mold is growing in hidden areas, like behind walls or under carpets.
Now, a blood test developed at Stanford Medicine offers a safer, faster way to diagnose invasive mold disease. In a new study, published Jan. 17 in Clinical Infectious Diseases, researchers found that the blood test, which detects genetic material from mold, could replace invasive tests in most cases.
Chronic fatigue, unexplained weight gain3, brain fog4, and sinus issues5 are some of the most common and often overlooked indicators of mold exposure. These symptoms are easily mistaken for other health issues and can persist for months or years if the underlying cause isn't identified.