Fresno : 5043 E. Cesar Chavez Blvd., Suite 104, Fresno, CA 93727
Fresno North: 7407 North Cedar Ave Suite 102 Fresno CA 93720
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Merced Office: 105 W El Portal Dr, Suite B, Merced, CA 95348
Fresno Office: 5043 E Cesar Chavez Blvd, Suite 104, Fresno, CA 93727
Merced Office: 105 W El Portal Dr, Suite B, Merced, CA 95348
Triggers and causes of asthma in Fresno climate

Causes and symptoms of asthma in Fresno and Merced

Understanding the triggers and warning signs

Seasonal allergies should not keep you from enjoying the moments that matter. Sierra Allergy Asthma and Sinus Center offer expert treatment options tailored to your body, your symptoms, and your lifestyle. Our team provides advanced care with a personal touch. Whether you struggle in the spring, summer, or fall, we are here to help you find lasting relief.

What causes Asthma?

Asthma is caused by a mix of genetics, immune sensitivity, and environmental triggers. In Fresno and Merced, poor air quality, seasonal pollen, and wildfire smoke play a major role. Common causes include:

  • • Family history of asthma or allergies
  • • Allergens like dust mites, mold, and pet dander
  • • Pollution and smoke from fires or traffic
  • • Viral infections, especially in children
  • • Job-related exposure to chemicals or dust
  • • Exercise and cold air, which can strain the lungs

Other factors

Asthma can also be triggered by:

  • • Emotional stress
  • • Weather changes
  • • Certain medications (e.g., aspirin, beta-blockers)
  • • Secondhand smoke
Coughing as a symptom of asthma attack

Symptoms of asthma

Asthma symptoms can range from mild to severe and vary by person. Common signs include:

  • • Wheezing (whistling sound when breathing)
  • • Shortness of breath (especially after mild activity)
  • • Chest tightness
  • • Persistent coughing, worse at night or after exercise
  • • Nighttime symptoms disrupting sleep


If you experience these symptoms, it’s important to consult with a specialist for proper diagnosis and treatment.

Wheezing and chest tightness due to asthma
Common asthma symptoms in children and adults

Why it matters in Fresno and Merced

The Central Valley has one of the highest asthma rates in California. With elevated pollution, agricultural exposure, and dry climate conditions, early detection and customized care are crucial. At Sierra Allergy Asthma and Sinus Center, our clinics in Fresno and Merced provide thorough evaluations to pinpoint your asthma triggers and develop a plan to help you breathe easier.

Ready to get relief?

If you recognize any of these symptoms or know your environment might be increasing your risk, our team is here to help. Schedule your personalized consultation today in Fresno or Merced and take the first step toward long-term asthma control.

Frequently Asked Questions

Asthma can be caused by a combination of genetic and environmental factors. Common triggers include allergens (like pollen, dust mites, and pet dander), respiratory infections, air pollution, exercise, and stress. A family history of asthma also increases your risk.

Typical asthma symptoms include wheezing, shortness of breath, chest tightness, and coughing, especially at night or early morning. The severity and frequency of these symptoms can vary from person to person.

If your cough is persistent, worse at night, or triggered by exercise, cold air, or allergens, it could be related to asthma. At Sierra Allergy Asthma and Sinus Center, we offer diagnostic tests to confirm whether asthma is the cause.

Yes, adult-onset asthma is common and can develop even if you’ve never had symptoms before. It’s often triggered by environmental factors or respiratory infections and requires proper diagnosis and treatment.

While symptoms are similar, like wheezing, coughing, and difficulty breathing. Children may show signs like frequent respiratory infections, fatigue during play, or trouble sleeping. Our clinic offers age-specific evaluations and treatments.

Merced Office Open on Saturdays