You clean your home, open the windows, and try to keep things fresh. But what if your house has a silent intruder? One that creeps in unnoticed and quietly starts affecting your health?
We’re talking about mould.
Mould isn’t just an ugly patch on the ceiling or a musty smell in the basement. For some people, especially those with allergies, asthma, or weakened immune systems, mould exposure can lead to real health issues. And the scary part? Many of these symptoms are easily mistaken for everyday illnesses.
In this blog, we’ll explore the 10 most common symptoms of mould toxicity, how mould might be affecting your health, and what you can do to stop it at the source.
So, What Is Mould Toxicity?
Mould toxicity, also known as mycotoxicosis, happens when your body reacts to toxic compounds produced by moulds. These moulds love damp, poorly ventilated spaces—like bathrooms, basements, or even the walls behind your furniture.
While not everyone reacts to mould, those who do may experience a wide range of symptoms. Sometimes, people live with these health issues for months—or even years—without realising their home might be the root cause.
Let’s dive into the most common signs your body could be reacting to mould in your home.
1. Persistent Coughing and Wheezing
If you’ve got a nagging cough that won’t go away or you find yourself wheezing even when you’re not ill, mould could be irritating your respiratory system. These symptoms are especially common in homes with hidden mould behind walls, under floors, or in ventilation systems.
Concerned about damp causing respiratory issues? Our expert damp proofing services in London tackle the root cause to restore your indoor air quality.
2. Sinus Congestion and Sneezing
Blocked nose? Constant sneezing? If you’re not dealing with hay fever or a cold, mould spores might be irritating your nasal passages. Sinus infections and post-nasal drip are common in mould-contaminated environments.
3. Red, Itchy, or Watery Eyes
Mould spores in the air can cause allergic reactions, especially in the eyes. Redness, itchiness, and watering that seem to come out of nowhere? Don’t just blame tiredness or screen time. Your indoor air might be carrying something more sinister.
4. Skin Rashes and Eczema Flare-Ups
Mould toxicity can cause skin reactions such as:
- Redness and hives
- Unexplained itching
- Worsening of eczema or psoriasis
If your skin issues don’t respond to creams or treatments, the issue may not be on your skin—it could be in the air you breathe.
5. Headaches and Brain Fog
One of the more frustrating symptoms people report is feeling mentally “foggy.” Mould can release compounds that affect the central nervous system, causing:
- Trouble concentrating
- Forgetfulness
- Frequent headaches
- Light sensitivity
Did you know? We offer condensation control solutions to improve air quality and reduce mould-triggering moisture buildup.
6. Extreme Fatigue
Chronic tiredness—even after a good night’s sleep—can be a red flag. Your immune system might be in overdrive, trying to fight off mould-related toxins. Fatigue is often one of the first signs that something in your environment is draining your energy.
7. Digestive Issues (Yes, Really)
Mould doesn’t just stay in the air—it can affect your gut too. Some people exposed to mould experience:
- Nausea
- Bloating
- Diarrhoea
- Stomach cramps
If your digestion is off and doctors can’t find a clear cause, consider mould as a hidden factor—especially if other symptoms are present too.
8. Joint Pain and Muscle Aches
Mould toxicity can cause inflammation in the body, leading to:
- Stiffness
- Aching muscles
- Sore joints, especially in the morning
These symptoms can easily be misdiagnosed as fibromyalgia or early arthritis. If traditional treatments aren’t helping, it’s worth investigating your home environment.
9. Mood Swings and Anxiety
Believe it or not, mould exposure can affect your mood. The inflammation and chemical imbalances caused by mould toxins can trigger:
- Sudden mood swings
- Increased anxiety
- Low-level depression
We’ve helped many clients recover peace of mind by removing the source. Read our success stories in Acton, Chiswick, and beyond.
10. Recurrent Infections
Mould can weaken the immune system, making you more vulnerable to:
- Chest infections
- Sinusitis
- Ear infections
- Thrush or yeast infections
- Recurrent UTIs
If you’re constantly getting sick, it’s not just bad luck. Your body might be worn down from fighting invisible enemies in the air.
What Happens If You Breathe in Mould Long-Term?
Long-term exposure can lead to chronic respiratory problems, autoimmune responses, and even neurological symptoms. Some studies have shown links between mould toxicity and conditions like chronic fatigue syndrome and Lyme-like symptoms.
Can Mould Live in Your Gut?
While mould typically affects the airways, toxic moulds can release mycotoxins that disrupt your gut microbiome. This can lead to long-term digestive issues and poor nutrient absorption.
What Should I Do If I Suspect Mould?
Here’s a simple action plan:
- Look for signs: Damp walls, peeling paint, musty odours, or visible black or green spots.
- Check hidden areas: Behind furniture, under carpets, around windows, and inside cupboards.
- Don’t ignore condensation: Bathrooms, kitchens, and laundry rooms are hotspots for mould growth.
- Get professional help: For persistent or hidden mould, it’s safest to call in the experts.
Call to Action: Don’t Let Mould Control Your Health
If you’ve made it this far and recognised one (or many) of the symptoms, don’t wait. Your home could be affecting your health more than you realise.
🏠 Time to breathe easy again?
Contact Damp and Mould Solutions Ltd. – London’s trusted specialists in damp surveys and mould removal.
📞 Call 020 4542 6114
📧 Email: [email protected]
Final Thoughts
Mould toxicity is real—and it’s more common than most people realise. If you’ve been living with strange, unexplained symptoms and nothing seems to help, your home might be the hidden source of the problem.
There’s no shame in reaching out for help. Identifying and eliminating mould could be the turning point for your health—and your peace of mind.
What is mould toxicity?
Mould toxicity, or mycotoxicosis, occurs when you’re exposed to harmful toxins produced by mould. It can trigger symptoms in your respiratory system, skin, digestion, and mood.
Can mould cause persistent coughing and wheezing?
Yes, mould spores can irritate the lungs and cause a long-term cough or wheezing, especially in people with asthma or allergies.
Does mould exposure lead to sinus congestion?
Absolutely. Mould can irritate the nasal passages, leading to sneezing, blocked sinuses, and post-nasal drip.
Can mould make your eyes itchy or watery?
Yes, airborne mould spores often trigger red, itchy, or watery eyes in sensitive individuals.
Can mould affect your skin?
Yes. Mould exposure may cause skin rashes, itching, and worsen conditions like eczema.
Does mould cause brain fog or headaches?
It can. Mould toxins may affect the nervous system, causing mental fog, forgetfulness, and frequent headaches.
Can mould make you feel tired all the time?
Yes. Mould exposure often leads to extreme fatigue, even after a full night’s sleep.
Does mould cause digestive problems?
Sometimes. Mould toxicity can lead to symptoms like nausea, bloating, diarrhoea, and cramps.
Can mould cause joint or muscle pain?
Yes, it can trigger inflammation that leads to stiff joints and muscle aches, especially in the morning.
Can mould exposure affect your mood?
Yes. It’s been linked to mood swings, anxiety, and low-level depression due to its effects on brain chemistry.
Does mould make you more prone to infections?
Yes. It can weaken your immune system, causing more frequent chest, sinus, or ear infections.
What happens if you breathe in mould for a long time?
Prolonged exposure may lead to chronic breathing issues, inflammation, and even neurological symptoms.
Can mould affect your gut health?
Yes. Some moulds release toxins that may disrupt your gut microbiome and cause digestive issues.
What should I do if I think I have mould in my home?
Check for signs like musty smells or damp walls, and contact a professional if you’re unsure.
How can I get help removing mould from my home?
Contact Damp and Mould Solutions Ltd for expert mould surveys, removal, and prevention services across London.