10 Warning Signs Of Mold Toxicity Everyone Should Know

10 warning signs of mold toxicity and Poisoning can be quite serious, yet many people don’t even know they could be impacted. Microorganisms such as mold can lead to something more insidious, the poisoning of your body if you are exposed.

If you have recently started to feel sick, or suspect that something else is ailing you beyond your typical illnesses, then it’s worth investigating whether or not your environment poses any sort of risk for exposure to mold.

Different scenarios in different homes, and different office spaces can lend themselves to unsuspecting exposure to dangerous concentrations of mold.

Signs that range from migraines and headaches all the way through to shortness of breath and brain fog can indicate an issue; and further symptoms like fatigue, depression and more systemic changes may mean that individuals require further medical assistance.

It’s important to note that this isn’t a holistic indicator that all cases are caused by exposure alone, but it is important that people be aware of these 10 warning signs so they can investigate properly – particularly if their family is also feeling ill!

10 Warning Signs Of Mold Toxicity Everyone Should Know

10 Warning Signs of Mold Toxicity

If your home is consistently damp, humid and dark, you may want to look out for the warning signs of mold toxicity and poisoning. This can come in the form of black, white, green or red colored mold (or all of the above) that’s spread across various surfaces of your home.

This type of growth flourishes due to high humidity levels and poor ventilation, often leading to health hazards if left untreated. It’s no surprise then that people with a family history of asthma as well as those living in a flooded, moist environment are more vulnerable to experiencing such contamination.

If any of these warning signs are found, it’s definitely time to call in the experts and make sure your home is free from toxic mold!

Here are the 10 warning mold poisoning symptoms,

Fungal arthritis: 

Prolonged exposure to indoor mold can lead to a mold-related infection that affects the joints, known as hematogenous spread of infection. 

Candida, exserohilum, and aspergillus are common types of mold that can cause fungal arthritis, although anyone can be affected. Those with a weakened immune system are at higher risk.

Digestive problems: 

Molds produce harmful substances called mycotoxins, which can irritate the digestive system when inhaled. This can lead to symptoms such as diarrhea, intestinal cramps, vomiting, intestinal bleeding, or nausea. 

Mold can also be ingested when consuming spoiled food, which can also cause digestive issues. Farmworkers are at higher risk of exposure to Aspergillus fumigatus and Aspergillus versicolor, common molds that can cause digestive problems.


Sudden and consistent feelings of tiredness can be a sign of mold toxicity. This can be caused by pneumonia, which reduces oxygen intake and leads to fatigue. 

The most common cause of this symptom is Stachybotrys chartarum (black mold), which consumes organic materials found in household items such as carpets, drywall, or wet floors.


Prolonged exposure to mycotoxins can cause the nervous system to malfunction, which can also affect the immune system, memory, frontal cortex, problem-solving ability, spontaneity, social life, and sexual behavior. This sign is more common in people living in humid environments.


Mold toxicity can make it difficult to sleep well, either due to the smell or the depression caused by the toxicity. Insomnia may also be accompanied by a loss of appetite, cardiovascular health problems, and blood pressure.

Intense cough: 

Prolonged exposure to black mold can lead to intense coughing. People with a weaker immune system are more prone to this symptom because the antibodies overreact when inhaling mold spores, leading to the production of mucus and histamine.


Prolonged exposure to moldy environments and inhalation of mold spores can lead to headaches as the immune system tries to fight off the spores. The headache should subside when leaving the moldy environment and inhaling fresh air.

Asthma attacks: 

Mold spores that are deposited in the nose lining and lungs can cause asthma attacks, especially in people with mold allergies or preexisting asthma. In these cases, previous medications may not be effective.

Watery eyes: 

Mycotoxins can enter the immune system through the eyes, causing them to become watery when they come into contact with eye cells. It may also cause an itchy throat. This symptom is common with black mold toxicity.

Skin infections: 

Toxic molds can also enter the immune system through skin pores. When molds come into contact with skin pores, they can cause skin infections such as itching. People with strong immune systems are usually not affected when their skin comes into contact with mold.

It is important to be aware of these symptoms of mold poisoning and take steps to address mold toxicity if it is suspected. This may involve removing the source of the mold, using air purifiers, and seeking medical attention. It is also important to maintain good indoor air quality by regularly cleaning and properly ventilating your living space.

Why Are Mold Issues Difficult To Diagnose?

Mold issues can be difficult to diagnose for several reasons. Firstly, there is no gold standard in testing for mold, which makes it difficult to accurately identify the presence and type of mold in a specific environment. 

Additionally, there is no standardized treatment protocol or specific drug for mold toxicity, meaning that treatment options are often limited and may not be effective for all patients.

Another factor contributing to the difficulty in diagnosing mold issues is the lack of human-based studies on the connection between mycotoxins (toxins produced by certain types of mold) and human health. 

This means that the full extent of the impact of mycotoxins on the human body is not fully understood, making it harder to diagnose and treat mold-related health issues.

Furthermore, the presentation of mold issues can vary greatly among patients, with some individuals experiencing no symptoms at all while others may have severe reactions. 

This unpredictability makes it difficult for doctors to accurately diagnose mold issues, especially if they are unfamiliar with the potential health effects of mold exposure.

Neurological Symptoms Of Mold Exposure

Mold exposure has been linked with a range of neurological symptoms, many of which can have a significant impact on quality of life. 

People who live or work in water-damaged buildings are particularly at risk of experiencing these effects, with reports of pain, fatigue, anxiety and depression as well as cognitive struggles like memory loss. 

Unfortunately, some healthcare professionals do not take mold toxicity seriously due to the lack of research surrounding the neurological symptoms associated with it. 

Light sensitivity 

Light sensitivity is one such symptom that has been widely reported by people exposed to mold. This can include difficulty tolerating bright light, lightheadedness and headaches when exposed to artificial lights or outdoor sunlight for extended periods.

Blurred vision 

Blurred vision is another common complaint associated with mold exposure. Those affected may experience temporary or persistent blurriness, making it difficult for them to focus on objects or read small print. 

Slurred speech

Slurred speech is also a common symptom reported by people affected by mold toxicity. It can be difficult for them to articulate their words clearly, making conversations arduous and frustrating; this could impede communication in school and work environments if not addressed timely. 

Coordination problems

Coordination problems have also been documented among those exposed to toxic molds; they may find it difficult to complete tasks requiring fine motor skills or balance such as writing and walking without stumbling over their own feet. 


Fatigue should also not be overlooked when assessing potential cases of neurological complications due to mold exposure; some patients feel so exhausted that they must take frequent naps throughout the day just to get through it adequately. 

Concentration issues

Concentration issues are yet another sign that must be taken seriously; sufferers may find themselves becoming easily distracted while trying to study or work, resulting in lower productivity levels than usual. 

Memory problems

Memory problems have likewise been linked with ongoing inhalation of mycotoxins—affected individuals may struggle to recall information both recently learnt and years old alike due to compromised neural pathways in the brain caused by prolonged exposure. 

Numbness in legs

Numbness in legs or feet has been attributed to ‘neuropathy’ caused by the neurotoxic compounds present in certain molds. 

This type of neurodegeneration compromises nerve signals sent from the brain down towards other organs and extremities, leading eventually leads feeling sensation loss in those areas if left untreated for long enough. 

Anxiety or depression

Anxiety or depression are also common amongst those affected by mycotoxins; sufferers often report feelings of sadness, fearlessness and disconnection from their environment where previously they had felt fulfilled and happy prior to their initial contact with the spores. 


Insomnia is yet another issue commonly experienced amongst victims—it can be difficult for them to stay asleep despite feeling physically exhausted at night time due to racing thoughts prompted by stress hormones released from their brains during times when they should ideally be resting peacefully instead.. 

Pain sensitivity

Finally, increased pain sensitivity has been noted among those exposed—even minor bumps against furniture can trigger intense throbbing sensations throughout their bodies due extreme discomfort caused within nerve cells connected directly into muscles tissues after prolonged inhalation of spores over several months/years if left unchecked properly during initial stages.

The ability of mold spores causing such an array of side effects is still controversial within some circles but there are now reviews backing up what many people already know—mold messes with your brain!

Symptoms Of Mold Poisoning In Adults

Mold poisoning is a serious issue that can have serious health consequences for adults. It is important to be aware of the symptoms of mold poisoning and to take steps to prevent and treat it.

The most common symptoms of mold poisoning in adults include:

Respiratory problems: Mold can cause a range of respiratory issues, including coughing, sneezing, and difficulty breathing. These symptoms can be especially severe for those with asthma or allergies.

Allergic reactions: Mold can cause allergic reactions, including itchy eyes, runny nose, and skin irritation. These reactions can range from mild to severe, depending on the individual and the type of mold present.

Headaches: Mold can cause headaches, which can be accompanied by dizziness and fatigue. These symptoms can be severe and can interfere with daily activities.

Gastrointestinal issues: Mold can cause digestive issues, such as nausea, vomiting, and diarrhea. These symptoms can be severe and can lead to dehydration.

Depression and anxiety: Mold can have a negative impact on mental health, leading to feelings of depression and anxiety. These symptoms can be severe and may require treatment.

10 Warning Signs of Mold Toxicity in Toddlers

Skin Irritation: Children exposed to black mold may experience skin irritation, including eczema flare-ups, dry and itchy skin, and dermatitis.

These symptoms can persist or worsen over time, making it important to identify the underlying cause and take appropriate measures to eliminate mold exposure.

Eye Irritation: Exposure to black mold spores can lead to eye irritation, such as inflammation, soreness, watery eyes, bloodshot eyes, and blurry vision. These symptoms may be persistent and affect a child’s overall comfort and visual acuity.

Respiratory Issues: Mycotoxins entering a child’s respiratory system can cause various respiratory problems. Toddlers exposed to mold may experience shortness of breath, persistent coughing, and wheezing.

These symptoms may resemble asthma or other respiratory conditions, but mold exposure should be considered as a potential underlying cause.

Bleeding Tendencies: Mold toxicity can have severe consequences on a child’s internal organs. Mycotoxins entering the bloodstream can lead to irregular heartbeat, low blood pressure, bleeding tendencies, internal bleeding, vomiting blood, inflammation in the heart, bleeding in the brain, and hemorrhagic pneumonia.

If a toddler exhibits unexplained bleeding or shows signs of organ-related complications, it is crucial to investigate possible mold exposure.

Seasonal Allergy-Like Symptoms: Mold exposure symptoms often mimic seasonal allergies, making it challenging to identify the root cause. If a child’s symptoms persist or do not improve despite usual allergy treatments, mold toxicity should be considered as a possible underlying issue.

It is important to remain vigilant and consult a healthcare professional to explore the possibility of mold-related health concerns.

Persistent Symptoms and Lack of Recovery: If a toddler continues to experience persistent symptoms despite various treatments, it is advisable to get in touch with a mold inspection and testing company.

These professionals can assess the indoor environment, identify mold sources, and provide recommendations for effective mold remediation.

Sensitivity, Health, and Mold Reaction: Each child may react differently to mold exposure based on their sensitivity and overall health. Factors such as the type and amount of mold present in the environment can influence the severity of symptoms.

Some children may be more susceptible to mold toxicity, while others may exhibit milder reactions. Recognizing these individual differences is essential for addressing the specific needs of each child.

Sore Throat and Nasal Congestion: Toddlers exposed to mold may complain of a sore throat or exhibit persistent nasal congestion. These symptoms can cause discomfort and affect a child’s quality of life.

If such symptoms persist or worsen over time, it is advisable to investigate potential mold sources in the child’s environment.

Itchy or Runny Nose: An itchy or runny nose is a common symptom associated with mold exposure in toddlers. If a child consistently experiences nasal discomfort and the condition does not improve, it is essential to consider mold as a possible cause and take appropriate action to address the issue.

Sinus Headaches: Mold exposure can trigger sinus headaches in toddlers. These headaches can range from mild to severe and may be accompanied by other respiratory symptoms.

Identifying the association between mold exposure and recurring sinus headaches is crucial in ensuring a child’s well-being and prompt intervention.

Intestinal Mold Symptoms and What You Need to Know

In some cases, however, intestinal mold may result in more serious symptoms, including digestive problems.

What Are the Intestinal Mold Symptoms?

Digestive problems related to mold exposure are not as common as other mold sickness symptoms such as allergic reactions and respiratory problems. 

However, exposure to household mold may lead to gastrointestinal issues such as nausea, vomiting, diarrhea, bleeding in the intestinal tract, abdominal cramping and the development of bacterial or yeast infections in the intestines. 

Agricultural workers may also be exposed to mold on the job which could affect their gastrointestinal health. If you think your intestinal symptoms might be caused by exposure to mold then it is best to see your primary care physician so they can run tests and diagnose any potential problem accurately. 

How Do You Know if You Have Mold in Your Gut?

If you have been exposed to a large amount of mold either in your home or at work then it’s possible that you have retained some of these spores inside your body, particularly if there have been prolonged periods of time where no action was taken against the infestation. 

Symptoms such as persistent coughing or feeling out of breath are signs that can indicate that there is a buildup of spores inside your body and should be investigated by a doctor immediately. 

Additionally, any changes or signs within your digestive system should be discussed with your doctor who will advise if further tests such as blood work or x-rays need to be carried out for a proper diagnosis. 

Can Mold Grow in Your Intestines? 

Unfortunately yes; given favorable conditions mold can grow in your intestines over time without you knowing it which can cause numerous health issues due its toxins being absorbed into the bloodstream potentially leading to organ damage depending on how far advanced it has become before being detected.

This is why preventive steps are always recommended when dealing with a known infestation within a property as well as regular checkups for anyone who has been exposed for extended periods of time so that any potential problems can be detected early on and treated appropriately. 

How Can I Test Myself For Mold Exposure?

If you think you may be suffering from mold exposure, testing yourself for it is one of the most important steps to take. There are several tests available to help identify if you have an allergy to mold and if you have been exposed to high levels of mold in your home or workplace.

One of the most common tests used to identify an allergy to mold is the skin prick test. During this procedure, small amounts of common or suspected allergens (such as mold) are applied directly onto the skin. 

If you’re allergic, you will usually develop a raised bump (hive) at the test location on your skin. This is because your body’s immune system has become sensitized to the allergen and is attempting to remove it by producing an inflammatory response. 

The skin prick test is generally considered safe, but some people may experience minor itching or redness at the site of application.

Another way to test for an allergy to mold is through a blood test, which measures your immune system’s response to mold by measuring the amount of certain antibodies in your bloodstream known as immunoglobulin E (IgE) antibodies. 

The IgE antibody count will be higher than normal if your body has been exposed and reacted negatively with a particular allergen such as mold spores. 

While this type of test can provide useful information about whether or not you may be allergic, it does not provide any indication about how severe your reaction may be or how much exposure you have had in total.

If these tests indicate that you may be suffering from an allergic reaction caused by mold exposure, then further testing can help determine how much environmental exposure there has been and what type of treatment is necessary for complete recovery. 

Visual inspection by a trained professional can be used to detect any signs of active growth such as visible discoloration or unpleasant odor. Air quality testing can also help determine if high levels of dangerous spores are present in indoor air and need eradication before creating any serious health risks for occupants. 

Sampling surface materials such as carpets and furniture can also help pinpoint potential sources so that they can be removed safely using appropriate protective gear and disposal methods when necessary. 

It’s important to note that while many doctors recognize allergies due to molds, there are still uncertainties regarding this topic due to wide variety of species available and their linked effects on human health that are yet unknown. 

It’s therefore crucial for those affected by allergies related to molds seek out medical advice from specialists who understand their condition better so that they receive accurate diagnosis and consequently proper treatments tailored specifically for them according their individual needs and conditions. 

Mold Poisoning Treatment

Treating mold symptoms can be challenging, as no single treatment is suitable for everyone; however, there are several methods that may help relieve the discomfort caused by mold exposure. 

The first step in treating mold poisoning is to avoid contact with the allergen itself. This means staying away from areas where mold is present and avoiding activities that may bring you into contact with it. 

If this is not possible due to your environment or activity level, wearing a face mask and protective clothing may help reduce your exposure to the allergen. 

According to the CDC, if you find mold in your home, you should promptly address the issue by identifying and fixing the source of moisture, cleaning up the moldy areas thoroughly, and ensuring proper ventilation to prevent its growth and potential health effects.

Additionally, keeping the home well-ventilated and using an air filter or purifier can help decrease levels of airborne spores in the air. 

In addition to avoiding contact with the allergen itself, medications such as nasal corticosteroids, antihistamines and oral decongestants can be used to alleviate allergy symptoms associated with mold poisoning. 

Nasal corticosteroids work by reducing inflammation in the nasal passages while antihistamines block histamine receptors in order to reduce sneezing and itching. Oral decongestants can also be used to treat congestion caused by allergies. 

Montelukast is another medication that may help reduce wheezing and improve breathing during an asthma attack triggered by mold exposure. 

Immunotherapy is another potential treatment option for people suffering from mold allergies. This type of therapy usually involves administering small doses of the allergen through injections or tablets over a period of time in order to desensitize your body and decrease allergic reactions when exposed to it again in the future. 

However, immunotherapy requires careful monitoring by an allergist and should only be considered after other treatments have failed or proven ineffective. 

Nasal lavage is another form of treatment that involves irrigating nasal passages with saline solution on a daily basis in order to flush out allergens that may have been inhaled through the nose. 

This procedure can help reduce allergic reactions as well as lessen sinus pressure associated with allergies. 

Final Words

Molds can release toxins called mycotoxins into the air which people can then breathe in. Some symptoms of mycotoxin poisoning include headaches, fever, and difficulty breathing. If you have any of these symptoms, it’s important to see a doctor immediately. 

You should also be on the lookout for mold in your home or office – if you see any signs of mold growth, don’t hesitate to call a professional Mold remediation company like us. Have you ever had any experience with mold toxicity? Let us know in the comments below!

Kristen Park - Specialised Content Writer for Caresh Fresh

My name is Kristen Park and I am a senior writer specialising in how-to guides and home cleaning information at Cares Fresh. As a researcher, I take pride in digging deep to find every small detail on a topic and explaining it in a way that is easy for the reader to understand.