Allergy advice
You have been assessed in the Emergency Department. Your symptoms suggest an allergic reaction. Your symptoms have improved and it is now safe to let you go home
Why has it happened?
Allergic reactions happen when your immune system has become sensitive to something.
Common allergies include: nuts, shellfish, certain fruits or vegetables and bee or wasp stings.
Various chemicals and medications - especially antibiotics - can cause allergic reactions.
What are the symptoms of an allergic reaction?
Symptoms of an allergic reaction include:
- an itchy rash
- swelling of your face or lips
- itchy, watery eyes
- abdominal pain
- diarrhoea and vomiting
Will it happen again?
There is a small chance that your symptoms may get worse after discharge. If your symptoms do get worse call 111, or if they are very severe call 999.
Try to work out if you have been exposed to anything new. For example: new foods, washing powders, and cosmetics. This may help you avoid having another episode in the future.
It is not always clear what has caused an allergic reaction. Occasionally the rash is caused by other things, such as a viral infection.
What should I do at home?
You may have been given medicine to help with the allergy. You should continue to take this as directed.
You may need to contact your GP so that they can decide if you need specialist follow up to be arranged.
Try to to avoid coming into contact with whatever caused the allergic reaction. If it is a food make sure you check the ingredients list. It is not always obvious which allergens a food product contains.
What do I do if I have another reaction?
If you have another allergic reaction you can call 111 or your GP for advice.
When should I call for urgent help?
Call 999 if you think you are having an allergic reaction and develop any of the following symptoms:
- difficult/noisy breathing
- swelling of the tongue
- swelling/tightness in throat
- difficulty talking and/or hoarse voice
- wheeze or persistent cough
- loss of consciousness and/or collapse
- pale and floppy (young children)
Further information and Support Groups
Below are some websites which you may find useful. You can also speak to your GP for more advice.
Food Standards Agency (provides information on food allergies and food labelling)
Reviewed by Dr T Shaw in September 2023, next review in September 2024.
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