Contact 
Locations .png){kind=icon}
Call Nose, eyes, seasons, or indoor exposure
Begin with allergic rhinitis, seasonal allergy, dust mite, mold, pet, or eye allergy when symptoms repeat around pollen, rooms, animals, or certain times of year.
Conditions
Allergy, Asthma, and Immune Conditions
Clear, welcoming guides can help you name the pattern you are experiencing and prepare better questions for a consultation.
Start with what you notice
You do not need to choose a diagnosis before you book
Symptoms often overlap. Itchy eyes can occur with nasal allergy, cough can involve the nose or lungs, and a food-related symptom does not always mean food allergy. These guides organize the most useful clues without asking you to diagnose yourself.
Start with the symptom pattern or known diagnosis that feels closest. A clinician can listen to the full story, explain which possibilities fit, and decide whether an examination, targeted testing, treatment review, or another specialty would add useful information.
Choose a starting point
Find the guide that matches your main question
Food, swelling, or a rapid reaction
Use the food allergy, anaphylaxis, hives, or individual food guides to organize timing, ingredients, body systems involved, and what happened after the exposure.
Skin contact or workplace products
The contact dermatitis and latex guides explain the difference between irritation, delayed contact allergy, and immediate allergy, along with the tests that answer each question.
Cough, exercise, or swallowing concerns
Chronic cough, exercise-induced bronchoconstriction, and eosinophilic esophagitis require different evaluations even when allergy is part of the wider health picture.
Condition library
Allergy, asthma, food, skin, and immune guides
Each guide explains the symptom pattern, what testing can and cannot show, questions to bring to a visit, and urgent warning signs.
Allergic Rhinitis (Hay Fever)
Sneezing, congestion, itching, and postnasal drip can be seasonal or year-round. Learn how exposure patterns and targeted tests are interpreted.
Read guideAnaphylaxis
Review emergency warning signs, the trigger timeline, testing limits, and the questions an allergist can answer after a severe reaction.
Read guideChronic Cough
A cough lasting weeks can have several causes. Learn which timing, exposure, airway, nasal, and reflux clues make the evaluation more focused.
Read guideContact Dermatitis
Compare allergic contact dermatitis, irritation, and eczema; understand patch testing; and learn which products and labels make a visit more useful.
Read guideDust Mite Allergy
Morning congestion, cleaning-related symptoms, asthma, or eczema may raise a dust mite question. Learn how tests and indoor exposure are connected.
Read guideEosinophilic Esophagitis (EoE)
Food sticking, feeding difficulty, long meals, or poor growth can be EoE clues. Learn why diagnosis and monitoring require esophageal biopsies.
Read guideExercise-Induced Asthma
Cough, tightness, or wheeze with exercise may be EIB or a look-alike. Learn how timing and objective breathing tests guide the evaluation.
Read guideEye Allergies
Itching and watering may be allergy, while pain or vision change needs a different response. Compare common eye symptom patterns.
Read guideFood Allergies
Learn how immediate food allergy differs from intolerance, what targeted tests mean, and when a supervised food challenge may answer uncertainty.
Read guideEgg Allergy
Baked and lightly cooked egg are different exposure questions. Learn what tests can show and what current flu vaccine guidance says.
Read guideFish Allergy
A fish reaction can vary by species or resemble scombroid poisoning. Learn which meal details and targeted tests help clarify the diagnosis.
Read guideMilk Allergy
Milk allergy involves protein; lactose intolerance involves milk sugar. Compare symptoms, baked-milk questions, testing, and nutrition needs.
Read guidePeanut Allergy
Peanut test results estimate probability, not future severity. Learn how component testing, school planning, OIT, and biologic options differ.
Read guideSesame Allergy
Sesame appears as seeds, tahini, paste, flour, oil, and hidden ingredients. Learn what U.S. labels cover and how testing is interpreted.
Read guideShellfish Allergy
Shrimp and crab, mollusks, finned fish, and contrast reactions are different questions. Learn how species and cross-reactivity shape testing.
Read guideSoy Allergy
Soy milk, formula, tofu, protein isolate, lecithin, and oil are not identical exposures. Learn how form and timing guide evaluation.
Read guideTree Nut Allergy
Tree nuts are separate foods, with especially close pairs such as cashew-pistachio and walnut-pecan. Learn how a nut-by-nut evaluation works.
Read guideWheat Allergy
Wheat allergy, celiac disease, gluten sensitivity, and exercise-related reactions use different tests and dietary rules. Compare them clearly.
Read guideHives & Angioedema
Learn how acute hives, chronic spontaneous urticaria, and swelling without hives differ, including when testing helps and when symptoms are urgent.
Read guideInsect Sting Allergy
Large local swelling differs from a systemic sting reaction. Learn when venom testing, tryptase, emergency planning, and immunotherapy enter the discussion.
Read guideLatex Allergy
Immediate latex protein allergy, delayed rubber-chemical dermatitis, and irritation look different. Learn which history and test fit each pattern.
Read guideMold Allergy
Mold testing measures patient sensitization, not a building. Learn how outdoor spores, indoor moisture, asthma, and home inspection questions differ.
Read guidePet Allergies
Pet allergens come from skin and saliva and can travel on clothing. Learn why no breed is reliably hypoallergenic and how tests are interpreted.
Read guideSeasonal Allergies
Pollen seasons shift across California and Arizona. Learn how local counts, symptom timing, indoor allergy, and targeted tests fit together.
Read guideNot sure which guide fits?
Choose the page closest to your main symptom and write down what does not fit. At a consultation, a clinician can sort through overlapping causes and explain which evaluation would be useful.
Do not wait for a routine visit in an emergency
Call 911 for severe trouble breathing, fainting, confusion, blue or gray lips, throat or tongue swelling, or a rapidly progressing reaction involving more than one body system.
Bring one clear question to your consultation
The scheduling team can help connect your main concern with a Modena Health location and the right appointment type.
How these guides are written
We use current guidance from national medical organizations and government health agencies. The guides explain questions to discuss with a clinician and do not replace personal medical care.
Live Well
Request a consultation with our team.
