Valley Fever or a Lingering Cold? What Inland Empire Patients Should Know About Cough After Dust Exposure

Why a cough after dust exposure deserves attention

Valley fever, also called coccidioidomycosis, is a lung infection caused by breathing in spores from a fungus called Coccidioides. The fungus lives in soil and dust in parts of the United States, including areas of California. Windstorms, construction, digging, and other activities that disturb soil can increase the chance of breathing in spores. (cdc.gov)

A cough after a dusty day does not automatically mean Valley fever. Dust can irritate the airways, and common respiratory viruses can cause cough, fever, sore throat, body aches, and fatigue. The reason Valley fever matters is that it can look like a routine respiratory infection or pneumonia, and symptoms alone cannot reliably tell the difference. (cdc.gov)

Valley fever symptoms can look like a lingering cold

Valley fever can cause:

• Fatigue or unusual tiredness
• Cough
• Fever
• Headache
• Shortness of breath
• Night sweats
• Muscle aches or joint pain
• Rash on the upper body or legs

CDC says symptoms may appear 1 to 3 weeks after someone breathes in the spores, and symptoms can last weeks to months. If symptoms last more than a week, CDC advises contacting a healthcare provider. (cdc.gov)

Think about Valley fever as a possibility if you develop a cough, fever, fatigue, chest discomfort, or pneumonia-like illness after:

• Working outdoors in dusty soil
• Gardening, digging, or landscaping
• Hiking, biking, or off-roading on dusty trails
• Being near construction or excavation
• Spending time outside during windy, dusty weather

Who is more likely to get seriously ill

Most people exposed to Coccidioides do not become seriously ill, but some groups have a higher risk of severe or disseminated disease, meaning infection that is more serious or spreads beyond the lungs. CDC lists higher-risk groups as people with weakened immune systems, people with HIV/AIDS, organ transplant recipients, people taking certain immune-suppressing medications, pregnant women, people with diabetes, Black or Filipino people, and people over age 60. (cdc.gov)

People with chronic lung disease should also take lingering cough or shortness of breath seriously, because other respiratory illnesses can also be more severe in people with underlying lung disease. If you have asthma, COPD, or another chronic lung condition and your breathing changes after dust exposure, do not wait for symptoms to become severe before seeking medical advice. (cdc.gov)

How doctors check for Valley fever

A clinician may ask about your symptoms, when they started, where you live or traveled, and whether you were around dust, soil, construction, or outdoor work. A lung exam may be followed by testing if Valley fever, pneumonia, asthma flare, COVID-19, flu, or another condition is possible.

Testing may include a blood test for Valley fever antibodies. Depending on your symptoms, a clinician may also order a chest x-ray or CT scan, or test respiratory fluid in selected cases. CDC notes that Valley fever often presents like community-acquired pneumonia in primary and urgent care settings and cannot be reliably distinguished from other respiratory illnesses by symptoms alone. (cdc.gov)

A negative test does not always end the question. CDC’s clinical testing algorithm notes that false-negative results can occur, and repeat testing or additional evaluation may be considered when suspicion remains, illness is progressing, or the patient is immunosuppressed. (cdc.gov)

Treatment depends on severity and risk

Many mild Valley fever infections improve without medication over time. For more serious infections or for people with risk factors for severe illness, clinicians may prescribe an oral antifungal medicine such as fluconazole, often for several months. Severe lung infection or infection that spreads outside the lungs may require longer treatment and sometimes hospital care. (cdc.gov)

Antibiotics treat bacterial infections; they do not treat fungal infections like Valley fever. If you were treated for pneumonia and are not getting better, ask your healthcare professional whether Valley fever or another fungal pneumonia should be considered. (cdc.gov)

What you can do after dusty outdoor exposure

You cannot completely avoid Valley fever risk in areas where the fungus lives, but you can reduce dust exposure. CDC suggests avoiding very dusty areas such as construction or excavation sites when possible, staying inside and closing windows during dust storms, using indoor air filtration, and considering a fitted N95 respirator if you cannot avoid dusty air. (cdc.gov)

If you garden or do yard work, try to limit dust: wet soil before digging, avoid working during high winds, and wash hands and exposed skin afterward. These steps are not a guarantee, but they may reduce the amount of dust you breathe.

In San Bernardino County

CDC’s California Valley fever awareness report classified San Bernardino County as a moderate-incidence California county based on county-specific Valley fever incidence during 2012–2017. The same report emphasized that public awareness in high- and moderate-incidence regions can help people recognize the illness earlier and seek appropriate evaluation. (cdc.gov)

San Bernardino County Environmental Health Services also maintains a Valley Fever section on its Helpful Links page that directs residents to CDC resources on symptoms, treatment, risk, prevention, and timely diagnosis. (ehs.sbcounty.gov)

When to call a doctor or seek urgent care

Call a healthcare professional if cough, fever, fatigue, shortness of breath, night sweats, or chest discomfort lasts more than a week after dust exposure, or sooner if you have diabetes, pregnancy, immune suppression, chronic lung disease, or another condition that raises your risk. Patients in Upland and Rancho Cucamonga can request care for cough, fever, and breathing symptoms through colds and respiratory infections or request a visit.

Seek urgent or emergency care now for worsening shortness of breath, trouble breathing, persistent chest pain or pressure, confusion, inability to stay awake, severe weakness or unsteadiness, coughing up blood, or symptoms that improve and then return worse. CDC lists difficulty breathing, chest or abdominal pain or pressure, confusion, severe weakness, and worsening fever or cough among emergency warning signs for respiratory illness complications. (cdc.gov)

We see patients for this at our Upland and Rancho Cucamonga offices. Request a visit or call either office.