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How Do I Know If Mold Is Making Me Sick at Home?

Last updated October 26, 2026

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The short answer

Watch Your Symptoms

Common signs that mold might be affecting you include a stuffy nose, throat irritation, wheezing, or skin rashes. These symptoms often appear after spending time in a particular room and fade when you go outside. Keep a simple diary of when symptoms occur and where you were in the home.

If you have asthma or allergies, mold can trigger stronger reactions. You may notice you need your inhaler more often or your allergy medicine stops working as well. Track these changes for a week or two. If a pattern emerges, mold in your living space becomes a likely culprit.

  • Sneezing or runny nose that worsens indoors
  • Coughing or wheezing after being in a basement or bathroom
  • Headaches or dizziness that resolve when you leave
  • Red, itchy, or watery eyes in specific rooms
  • Fatigue or difficulty concentrating during extended time at home
  • Unexplained skin irritation or rashes

Look for Visible Mold

Mold often grows in hidden spots, so a visual check matters. Look for black, green, or white patches on walls, ceilings, grout, window frames, or around pipes. Musty odors are a strong clue even when you cannot see the growth. Check behind furniture, under sinks, and in closets.

If you find mold, you can clean small areas yourself with soap and water, but larger patches or growth on porous materials like drywall may need professional removal. Moisture problems can worsen quickly in humid weather, so address leaks or dampness soon. See a doctor if you feel unwell.

Check for Moisture Sources

Mold needs moisture to thrive, so find where water is entering your home. Look for roof leaks, plumbing drips, condensation on cold surfaces, or poor ventilation in bathrooms and kitchens. A damp basement or crawl space is a common source. Fixing the moisture problem is the first step to stopping mold.

If you have had water damage from a burst pipe, flooding, or an overflowing AC drain, mold can develop within days. The pros can help with water damage cleanup and mold remediation, but you need to act quickly. Dry wet areas thoroughly and remove soaked materials like carpet or drywall.

Consider Testing Your Home

If you cannot find visible mold but symptoms persist, you might consider air sampling or surface testing. These tests can identify mold spores in the air or on surfaces. However, testing results can be hard to interpret without a professional, and they do not tell you if the mold is making you sick.

A doctor can test you for allergies or asthma related to mold. They may recommend skin or blood tests to see if you have a sensitivity. If you suspect mold exposure is harming your health, seek medical advice. A mold professional can also inspect your home for hidden growth.

When to Call the Pros

If you find a large mold patch, mold on drywall or insulation, or mold that keeps coming back, it is time to call local water damage pros. They have the equipment to dry out affected areas and remove contaminated materials safely. They can also identify the source of moisture that is feeding the mold.

In a humid climate like Arlington's, mold can return if the underlying dampness is not fixed. The pros can handle cleanup from water damage, such as from a broken pipe or roof leak, which often leads to mold. If you are unsure whether mold is making you sick, see a doctor and have a professional inspect your home.

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Frequently asked questions

Can mold cause long-term health problems?

For some people, long-term exposure to mold may worsen asthma, trigger allergies, or lead to respiratory infections. However, healthy individuals often recover once the mold is removed. If you have ongoing symptoms, see a doctor to discuss your specific situation.

What does mold sickness feel like?

Mold sickness often feels like seasonal allergies: sneezing, congestion, itchy eyes, or headaches. Some people experience fatigue or trouble breathing. If these symptoms occur mainly at home and improve when you leave, mold might be the cause. A doctor can help confirm.

Should I clean mold myself or hire someone?

You can clean small patches (less than a square meter) with soap and water. For larger areas, mold on porous materials, or if you have health conditions, hire a professional. The pros can safely remove contaminated drywall or carpet and address the moisture problem.

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