Symptom checker
Our Symptom checker provides clinical advice on what to do next based on your symptoms.
Hives
Hives is a skin rash that is often triggered by an infection or allergy. Learn to recognise symptoms.
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Penicillin
Penicillin is the name given to a widely-used group of antibiotic drugs. Penicillin can have side-effects, and some people suffer allergic reactions. Find out more here.
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Cat and dog allergy
Allergies to cats and dogs are common, and symptoms can be severe. Learn more about how to live with a pet allergy.
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Allergic reactions to antibiotics
Some people have an allergic reaction to antibiotics. Learn about the symptoms and the difference between allergic reactions and side effects.
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Allergies and hypersensitivities
An allergic reaction occurs when the immune system overreacts to a foreign substance that usually causes few or no problems in most people.
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Anaphylaxis
Anaphylaxis is very serious and can even be fatal. See here for the symptoms to look out for and what to do in an emergency.
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Itchy skin
Itchy skin is a common irritation that can be very frustrating. Understand the different types of itchy skin and how to ease the discomfort.
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Antihistamines
Antihistamine medications help ease allergy symptoms. Read more about how they're used to treat conditions like hay fever and asthma.
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Allergies to seafood
Seafood allergy is complex, and 4-in-5 people will have it for life. Find out more about the symptoms and diagnosis of seafood and fish allergy.
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Nut allergies
Exposure to nuts, even in very small amounts, is a common trigger for a severe allergic reaction. Find out more here about nut allergies and how they can be managed.
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