About Coccidioidomycosis (Valley Fever)
Coccidioidomycosis is caused by the inhalation of airborne spores of the Coccidioides fungus. The fungus is typically found in warm, arid regions, including the southwestern United States, northern Mexico, and parts of Central and South America. When the spores are inhaled, they can establish an infection in the lungs.
Non-modifiable risk factors are factors that cannot be changed or controlled. Non-modifiable risk factors include:
- Geography: Living or traveling to regions where the fungus is endemic increases the risk of exposure.
- Those with weakened immune system such as individuals who are:
- Elderly
- Pregnant
- Have a history of diabetes
Modifiable risk factors are factors that can be influenced or changed.
Modifiable risk factors include:
- Occupational exposure: Certain occupations, such as construction workers or agricultural workers, may have a higher risk of exposure to the fungus.
- Outdoor activities: Spending a significant amount of time outdoors in endemic areas may increase the risk of exposure.
- Dust exposure: Activities that generate dust, such as digging or construction work, can increase the likelihood of inhaling fungal spores.
It's important to note that while these risk factors can increase the chances of developing coccidioidomycosis, not everyone exposed to the fungus will develop symptoms or become ill. If you have concerns about your risk or symptoms, consult with your healthcare professional.
The most common early symptoms of coccidioidomycosis (Valley fever) include:
- Fatigue
- Cough
- Fever
- Shortness of breath
- Headache
As the disease progresses or becomes more severe, the following symptoms may occur:
- Night sweats
- Muscle aches or joint pain
- Rash on upper body or legs
In rare cases, the fungal spores can enter the skin through a cut, wound, or splinter and cause a skin infection.
It's important to note that not everyone who is exposed to the fungus will develop symptoms. Some people may have symptoms that go away on their own after weeks. If your symptoms last for more than a week, it's advisable to contact your healthcare provider.
To diagnose coccidioidomycosis, healthcare providers commonly perform the following examinations, tests, and procedures:
- Medical and travel history: Healthcare providers rely on your medical and travel history to assess the likelihood of exposure to the Coccidioides fungus.
- Physical examination: A physical examination helps healthcare providers evaluate your symptoms and look for signs of Valley fever, such as skin rashes or lung abnormalities.
- Blood tests: Taking a blood sample allows healthcare providers to test for Coccidioides antibodies or antigens, which can indicate the presence of Valley fever.
- Imaging tests: Chest X-rays or CT scans may be performed to examine your lungs for signs of Valley fever pneumonia.
- Tissue biopsy: In some cases, a small sample of tissue is taken from the body and examined under a microscope to confirm the presence of Coccidioides fungi.
To determine the stage or severity of coccidioidomycosis, additional examinations, tests, and procedures may include:
- Sputum smear test: A sample of sputum (mucus coughed up from the lungs) is tested for the presence of Coccidioides.
- Urine test: Polymerase Chain Reaction (PCR) urine tests are being investigated as a potential diagnostic tool for Valley fever.
It's important to note that treatment for Valley fever may not be necessary for most people, even in more severe cases. Resting and staying hydrated are often recommended. Remember to consult with your healthcare professional for personalized advice and guidance regarding examinations, tests, and procedures.
The goals of treatment for coccidioidomycosis are to alleviate symptoms, prevent complications, and eradicate the fungal infection. The recommended treatments and their mechanisms are as follows:
- Antifungal medications: These medications are the mainstay of treatment for Valley fever. They work by targeting and killing the Coccidioides fungi responsible for the infection. Antifungal medications can be applied to the skin, injected, or in pill form.
- Close follow-up: Regular monitoring and close follow-up are recommended, especially if antifungal treatment is needed. This allows healthcare professionals to assess the effectiveness of treatment, adjust medication dosages if necessary, and identify any potential complications.
- Long-term treatment for immunosuppressed individuals: If you have a suppressed or weakened immune system, such as from certain medical conditions or medications, long-term antifungal treatment may be necessary to prevent the recurrence of Valley Fever.
- Antibiotics for secondary infections: In some cases, the broken skin of the lesions may become infected. Antibiotics may be prescribed to treat these secondary infections.
It is important to note that these recommendations are general guidelines and individual treatment plans may vary. Always consult with your healthcare professional for personalized advice regarding medication types, dosing, and potential side effects.
Medication dosing may be affected by many factors. Check with your health care professional about dosing for your individual situation. Other side effects can occur. Check with your health care professional or read the information provided with your medication for additional side effect information.