Award-Winning Allergy and Asthma Care in Denton County
Recognized as Best Allergist of Denton County and Best Allergy Center of Denton County by the local community.

Meet Dr. Sherry Barnett
Board Certified Allergist & Immunologist
BS, Biology
University of California, San Diego
Doctor of Medicine
Tulane University School of Medicine
Residency
Internal Medicine, Scripps Mercy Hospital, San Diego
Fellowship Training
UT Southwestern Medical School, Dallas
Alpha Omega Alpha
National Medical Honor Society
Expert Allergy Testing, Treatment, and Asthma Care
From diagnosis to ongoing management, we provide expert care for all allergy and asthma conditions.
Allergy & Asthma Symptoms
Check common allergy and asthma symptoms and when expert care is needed.
Allergy & Immune Conditions
View the allergy, asthma, and immune conditions we diagnose and manage.
Latest from Our Knowledge Hub
Expert insights and guidance for managing allergies and asthma.
When to See an Allergist
Allergies and asthma can affect the skin, lungs, sinuses, and digestive system. If symptoms persist or interfere with daily life, a specialist evaluation can provide answers and a clear treatment plan.
Skin Symptoms
If you are experiencing any of the following symptoms:
Raised, red or skin-colored welts
Intensely itchy rashes
Rashes that change location, appearing and disappearing within 24 hours
Possible associated swelling of the lips, eyelids, hands, or feet
Sudden onset itching with blotchy, migrating welts that resolve without bruising or scarring.
Dry, rough, scaly patches of skin
Red or darker-than-usual areas of skin (depending on skin tone)
Intense itch without a rash
Skin that cracks, oozes, or crusts when flared
Skin often looks chronically dry and thickened from scratching
Burning sensation
Sometimes small blisters or peeling
Clearly outlined area matching exposure to a chemical, metal, or personal care product
Cough & Breathing Symptoms
If you are experiencing any of the following symptoms:
A cough that lingers after a cold and “just won’t clear up”
Can be dry and hacking, or sometimes wet with mucus
Worse at night or when lying down
Triggered by talking, laughing, cold air, or strong smells
Associated with throat clearing or a tickling sensation in the throat
Cough accompanied by post-nasal drip, chest tightness, or mild shortness of breath, with or without wheezing
May worsen at night or early morning
Triggered by exercise, cold air, laughter, or respiratory infections
May be associated with hoarseness, throat irritation, or a sour taste
Sinus & Nasal Symptoms
If you are experiencing any of the following symptoms:
Runny nose
Chronic nasal congestion
Recurrent sinus infections
Post-nasal drip, clearing of the throat
Chronic sinusitis, including cases with nasal polyps
Cough
Eye watering, itch, or swelling
Decreased or absent sense of smell
Food & Digestive (GI) Symptoms
Severe reactions (anaphylaxis) can involve multiple body systems and require urgent medical care.
Hives, itching, flushing, swelling of lips, face, tongue, or eyelids soon after consuming a particular food item.
GI symptoms: Nausea Vomiting Abdominal cramping Diarrhea
Respiratory symptoms: Coughing Wheezing Shortness of breath Throat tightness Hoarseness
Cardiovascular symptoms: Dizziness, Fainting, Pale or weak feeling
See an allergist if:
Symptoms happen quickly after eating
Reactions involve more than one body system
There is swelling, breathing difficulty, or fainting
You are avoiding foods without a clear diagnosis
Other reasons to see an Allergist for GI symptoms:
Persistent vomiting
Difficulty swallowing
Food getting stuck
Chronic diarrhea (Symptoms repeatedly occur with the same food)
There are hives, swelling, or breathing symptoms
There is concern for anaphylaxis
You need guidance on safe food reintroduction
Get in Touch
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Our Location
Located 2 blocks west of Sonic on FM 1171 (Cross Timbers Rd) between 2 State Farm agencies. We are in the middle building with "The Suites" over the archway.
Office Hours
Monday
8:00am - 5:30pm
Tuesday
10:00am - 6:30pm
Wednesday
7:30am - 5:00pm
Thursday
8:00am - 5:30pm
Friday-Sun
Closed
Closed on major holidays:
New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving, and Christmas Day
















