Symptoms
Allergy and asthma symptoms can affect the nose, eyes, skin, sinuses, lungs, and even reactions to foods or medications. This page helps you explore common symptom patterns and understand which detailed symptom page may best match what you are experiencing.
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Explore symptom concerns
Browse the symptom groups below to find the page that most closely matches what you or your child may be experiencing. Each page explains common patterns, possible causes, and when specialist evaluation may help.
Sneezing, runny nose, and congestion
Learn what sneezing, a runny nose, nasal congestion, and postnasal drainage may mean, including seasonal allergies, indoor allergies, sinus irritation, and chronic rhinitis.
Wheezing, cough, and shortness of breath
Understand possible causes of wheezing, cough, chest tightness, and shortness of breath, including asthma, allergy-related airway symptoms, needing evaluation.
Hives, itching, and rashes
Explore common causes of hives, itchy skin, allergic rashes, and unexplained irritation, including food reactions, medication reactions, eczema, and chronic urticaria.
Sinus pressure and recurrent infections
Learn how sinus pressure, facial pain, congestion, and recurrent sinus infections may relate to allergies, sinusitis, chronic inflammation, or ongoing nasal blockage.
Food reactions
Find out what symptoms after eating may suggest, including food allergy, oral allergy syndrome, digestive reactions, hives, swelling, vomiting, or anaphylaxis.
Medication reactions
Understand how medication reactions may appear, including rash, itching, swelling, breathing symptoms, or delayed drug allergy symptoms that need specialist review.
Eye irritation and itchy eyes
Learn what sneezing, a runny nose, nasal congestion, and postnasal drainage may mean, including seasonal allergies, indoor allergies, sinus irritation, and chronic rhinitis.
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Book an appointmentFrequently Asked Questions
Q1. What symptoms can allergies cause?
Allergies can cause symptoms such as sneezing, a runny or stuffy nose, itchy or watery eyes, skin rashes, hives, swelling, cough, wheezing, and sometimes digestive symptoms depending on the trigger.
Q2. How do I know if my symptoms are allergies or a cold?
Allergies often follow a pattern around triggers and commonly cause itching of the eyes or nose, while colds are caused by infections and may come with body aches, fever, or symptoms that change over several days.
Q3. Can allergies cause coughing or shortness of breath?
Yes. Allergies can affect the airways and may contribute to coughing, wheezing, chest tightness, or shortness of breath, especially when asthma is also involved.
Q4. Can food allergies cause stomach symptoms?
Yes. Food allergies may cause symptoms such as vomiting, diarrhea, stomach cramps, hives, swelling, or more severe reactions.
Q5. When should allergy symptoms be evaluated by a specialist?
A specialist visit may help when symptoms keep coming back, do not improve with usual treatment, or when a clearer diagnosis would help guide management.
Q6. Can skin rashes or hives be caused by allergies?
Yes. Allergies can cause hives, itching, swelling, and other skin symptoms, although not every rash is allergy-related.
Q7. Can allergy symptoms become serious?
Yes. Some allergic reactions can become severe and lead to anaphylaxis, which needs urgent medical attention.