A dry climate doesn’t mean a healthy indoor environment. Here are the Arizona-specific exposures worth knowing about, and simple steps to check your home.
Mold in water-damaged buildings, even in a dry climate
Mold grows wherever water damage lingers. Swamp coolers, monsoon storms that find their way through roofs, slab and plumbing leaks, and ductwork that hasn’t been serviced can leave parts of an Arizona home or workplace water-damaged and damp. Because the air outside is dry, people rarely suspect mold indoors.
What you can do
Have swamp coolers and HVAC systems serviced and cleaned regularly.
After monsoon storms, check ceilings, walls and under sinks for stains or musty smells.
Fix leaks and dry wet materials within 12 hours or less. For a fresh leak or flooding, contact a local water-damage restoration company right away.
Keep indoor humidity under 50% (a $10–$50 humidity meter from a hardware store makes this easy to check).
Valley fever (coccidioidomycosis) is a fungal infection caught by breathing in spores from soil when dust is stirred up. Arizona reports a large share of US cases, mostly from Maricopa, Pima and Pinal counties. Many infections are mild, but some cause a lingering, flu-like illness with cough, fatigue and joint aches.
What you can do
Limit time outdoors during dust storms, and wet down soil before digging.
If respiratory symptoms linger after a dusty exposure, ask your doctor about valley fever testing.
Homes built before 1978 are more likely to contain lead-based paint. Paint in good condition is usually not a problem, but peeling paint, friction surfaces like windows and doors, and renovation can create lead dust.
What you can do
Use lead-safe practices, or a certified contractor, before renovating an older home.
Keep painted surfaces in good repair and clean up dust with wet methods.
Cleaner living resourcesDr. Madeira’s list of water filters, air purifiers and tools for choosing safer everyday products.
When to talk with a doctor
If you have ongoing symptoms such as fatigue, brain fog, headaches or breathing problems, and they seem worse at home or started after a move, leak or renovation, it’s worth discussing your environment with a clinician experienced in environmental medicine. Many symptoms have other causes too, so an individual assessment matters.
Signs of valley fever
Many people with valley fever have no symptoms. When symptoms appear, usually 1 to 3 weeks after breathing in dust, the most common are:
Fever and night sweats
Cough, sometimes with chest pain
Headache
Loss of appetite
Joint pain or muscle aches, sometimes with painful red bumps on the lower legs
If respiratory symptoms linger, especially after dust exposure in Arizona, ask your doctor about valley fever testing.
Lead exposure often builds slowly and may cause no obvious symptoms, so testing matters if you have a known exposure. When symptoms do appear, they can include:
Neurological symptoms: headaches, trouble sleeping, irritability or mood changes, and reduced sensation
Digestive symptoms: abdominal pain or cramping, and constipation
Low energy and low appetite
Anemia (low red blood cell count) and hearing loss
In children: loss of developmental skills, and attention or behavior problems
Vomiting, seizures or a staggering walk can signal very high lead levels: call 911. For other questions, Poison Help is available at 1-800-222-1222.
Book a free 30-minute discovery call with Dr. Madeira. We’ll start with your why: what you want your health and life to look like, what’s been getting in the way, and whether working together feels right for you.
Dr. Sam Madeira, NMD