Food allergy symptoms and causes in Merced & Fresno, CA

Personalized diagnosis & care at Sierra Allergy Asthma & Sinus Center

Sierra Allergy Asthma & Sinus Center, we specialize in identifying and managing food allergies in patients across Fresno and Merced, California. Understanding the underlying causes and symptoms is the first step toward proper treatment and prevention.

Common food allergy symptoms

The symptoms of food allergies can range from mild discomfort to serious emergencies. These symptoms typically appear within minutes to a couple of hours after eating the trigger food. Here’s what to look out for:

Skin-related symptoms

• Hives or welts
• Eczema flare-ups
• Redness or itching
• Swelling around the eyes or face

Gastrointestinal symptoms

• Nausea and vomiting
• Abdominal cramps
• Diarrhea
• Bloating or gas

Respiratory Symptoms

• Nasal congestion or runny nose
• Wheezing or coughing
• Difficulty breathing
• Throat tightness or hoarseness

Cardiovascular & neurological symptoms

• Dizziness or light-headedness
• Rapid heartbeat
• Fainting
• Anaphylaxis — a severe, life-threatening allergic reaction that requires immediate medical attention

If you or your child experiences any of these symptoms after eating, schedule a
consultation with a food allergy specialist in Fresno or Merced as soon as possible.

Causes of food allergies

Food allergies develop when the immune system mistakenly identifies a harmless food protein as a threat. The body responds by producing IgE antibodies, which trigger the release of histamine and other chemicals, causing allergy symptoms.

• Top food allergy triggers
• Peanuts and Tree Nuts (like almonds, cashews, walnuts)
• Milk and Dairy Products Eggs
• Wheat and Gluten Soy
Fish and Shellfish
Sesame Seeds

These common food allergens are responsible for the majority of allergic reactions, especially in children and young adults.

Why food allergies are increasing in Central California

In regions like Fresno and Merced, the rise in pediatric food allergies and adult-onset allergies may be related to several environmental and genetic factors, including:

• Genetics: A family history of asthma, eczema, or seasonal allergies
• Environmental Exposure: Agricultural chemicals and pollutants common in California’s Central Valley
• Gut Health: Poor diet and changes in gut bacteria
• Early Childhood Factors: Delayed exposure to certain foods or lack of breastfeeding

We take a personalized approach to understanding these root causes of food allergies and offer targeted testing and guidance for long-term management.

When the seasons change, your care shouldn't. We're here.

Food allergy risks in Fresno & Merced

Central California is unique in its agricultural diversity, but this can also increase your exposure to allergens. For instance:

• Pollen-Food Syndrome (Oral Allergy Syndrome) is more common here due to cross-reactivity between pollen and raw fruits or vegetables.
• Locally grown nuts, stone fruits, and melons may trigger allergic responses in sensitive individuals.
• Frequent air pollution and dust may intensify allergic reactions in both children and adults.

If you’re in Fresno or Merced and suspect a food allergy, a local food allergist can help identify the specific triggers and provide actionable solutions tailored to your environment.

Who’s at Risk?

You may be at higher risk for developing food allergies if:

• You have a parent or sibling with allergies
• You have asthma, eczema, or hay fever
• You live in areas with high pollen exposure like Merced or Fresno
• You’re a child (especially under 5 years old)
• You follow a diet lacking in variety or early food introduction

If you or your child falls into any of these categories, our team at Sierra Allergy Asthma & Sinus Center recommends proactive food allergy testing and prevention strategies.

Get expert food allergy help in Fresno & Merced

At Sierra Allergy Asthma & Sinus Center, we’re committed to improving the lives of individuals with food allergies in California’s Central Valley. We provide:

• Food allergy diagnosis
• IgE blood testing and skin prick tests
• Oral food challenges (when appropriate)
• Customized allergen avoidance plans
• Emergency action plans for anaphylaxis

Don’t ignore the warning signs. If you experience any symptoms of a food allergy, trust the top food allergist in Merced or Fresno to help you breathe easier and live better.