Second Location: Beginning in August 2026, we will see patients on Tuesdays at our new location: 8888 Ladue Road, Suite 105, St. Louis. Our primary location at 4800 Mexico Rd in St. Peters will be closed on Tuesdays. We look forward to welcoming you to our new space!
Welcome To
St. Louis Family Allergy
Personalized allergy, asthma, and immunology care for families in St. Louis, St. Peters, & surrounding areas in Missouri.
Dr. Sonia Cajigal
Allergist & Immunologist
Dr. Sonia Cajigal is an Allergist in St. Louis and is a native to the area. She is familiar with the area and, of course, the allergies that come with it. Having suffered from allergies herself, she understands how prevalent St. Louis allergies are and how much of an impact they can have on day-to-day comfort and quality of life. Dr. Cajigal is passionate about providing top-quality allergy, asthma, and immunology care to adult and pediatric patients in St. Louis, St. Peters, and surrounding Missouri cities. She is especially grateful to have found a specialty where she is able to help her patients feel better and live healthier, happier lives. See what her patients have to say in the testimonials below!
Allergy Testing & Treatment in St. Louis, Missouri
Nasal Allergies
Learn what you can do to live comfortably with allergic rhinitis.
Skin Allergies
We can help you with eczema, hives, angioedema, and contact dermatitis.
Food Allergies
Learn which foods you’re allergic to and how to best manage reactions.
Eye Allergies
Learn what you can do to better protect yourself against eye allergies.
Drug Allergies
Visit us at St. Louis Family Allergy to confirm your drug allergy diagnosis.
Asthma
Identify asthma in your children and learn how to effectively manage symptoms.
Allergy Testing
We offer a full suite of testing services to help you understand your symptoms.
Allergy Shots
Allergy shots can provide long-term relief from allergies.
Biologic Therapy
Individuals with certain allergy conditions may benefit from biologic injections.
Ask Us About Quick-LI
Quick-LI builds up allergy resistance faster than allergy shots!
St. Louis Family Allergy is excited to offer Quick-LI (intralymphatic immunotherapy) for the treatment of environmental allergies. Quick-Li, the procedure named and refined by Dr. Brynn Everist, has seen great success in Kansas City. Dr. Everist’s patients have experienced excellent outcomes, and we are thrilled to bring this innovative procedure to our office!
Get in touch to ask us about the new Quick-LI procedure.
Our St. Louis Allergy Center
Come see us at:
4800 Mexico Rd, Ste 101
St. Peters, MO 63376
Schedule Your Visit
We are currently accepting new adult and pediatric patients at St. Louis Family Allergy!
Reach out by phone, instant message, email, or the submission form below to schedule your visit.
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You can also use this contact form for general inquiries.