Adult and child
IF YOU THINK YOU ARE HAVING AN ALLERGIC REACTION PLEASE SEEK MEDICAL ADVICE IMMEDIATELY– IF YOU ARE HAVING ANAPHYLAXIS SYMPTOMS USE YOUR ADRENALINE AUTO-INJECTOR IMMEDIATELY AND CALL 999
Anaphylaxis is pronounced anna-fill-axis. This is the most serious reaction to an allergen; the symptoms onset is quick and could be life threatening. Fatalities are rare but anaphylaxis must be treated seriously and seek medical attention immediately. In most people two or more systems are involved.
A food allergy can be life threatening; a food intolerance is where your body has a problem digesting a food, a food intolerance is not life threatening.
Sometimes, anaphylaxis can occur when there is no known trigger. This is referred to as ‘idiopathic anaphylaxis’.
Signs and symptoms
An allergic reaction can cause symptoms within minutes to exposure of an allergen, in some cases it can vary and can be several hours after exposure, this is because the mouth and throat are still absorbing the food which has the allergen present.
In every person the reaction can be different, anaphylaxis normally include 2 or more of the symptoms below, also anaphylaxis can occur without hives. Always act quickly from onset of first symptoms.
Antihistamines can help with hives, stop itching, but they cannot stop anaphylaxis, if having anaphylactic symptoms use adrenaline auto-injector first before taking any other medications.
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SKIN
Hives (urticaria) anywhere on the body | |||
Swelling (face, lips, tongue) – this is called angioedema, and other parts of the body can swell. There could be difficulty in speaking due to swelling. | |||
Itching | |||
Warmth, skin hot to touch, or feels clammy. | |||
Redness | |||
Pale or blue colouring of the skin |
RESPIRATORY (BREATHING)
Coughing, wheezing, shortness of breath, chest pain or tightness, feeling of burning in chest area, severe asthma, fast and shallow breathing, laboured, noisy breathing. | |||
Throat tightness (problems with swallowing), hoarse voice, there could be difficulties with speaking. | |||
Nasal congestion or hay fever-like symptoms, (runny, itchy nose and watery eyes, sneezing) Nasal congestion could cause breathing through nose restricted. |
GASTROINTESTINAL (STOMACH)
Nausea | ||
Pain or cramps (Pain can vary in severity) | ||
Vomiting | ||
Diarrhoea and can be acidic |
CARDIOVASCULAR (HEART)
Cardiac arrest
Paler than normal skin colour/blue colour | |||||
Weak pulse | |||||
Passing out, dizziness or light-headedness, loss of consciousness (in extreme cases) confusion | |||||
Shock | |||||
Low blood pressure | |||||
Pounding heart, heart rate increased. |
OTHER
Anxiety, sense of doom (the feeling that something bad is about to happen), disorientation, confusion, distress, clumsiness, or panic. | ||
Headache | ||
Uterine cramps | ||
Swelling of eyes, eyes maybe difficult to open due severity of swelling. Eyes could be reddened. | ||
Metallic taste | ||
Pain in inner ears | ||
Sores on tongue | ||
Itching mouth | ||
Sore mouth | ||
Tingling lips, tingling tongue, tingling mouth | ||
Angioedema may occur in the face, tongue, larynx, abdomen, or arms and legs | ||
Floppiness in a child | ||
Urinary urgency, or incontinence |
Please note a child might have different symptoms to an adult, also they might use different language.
- Pulling or scratching at their tongue
- Placing their hands in their mouths
- If they can talk, their words maybe slurred or understandable.
- They might say my throat feels funny.
- Their tongue feels funny.
- Change in the voice tone.
- I don’t feel well.
- My tummy hurts
- I feel itchy
- My eyes are sore
- My ears are sore
- My lips feel funny
- My mouth feels funny
- The food doesn’t taste good
Symptoms in babies up to 2 years of age
Change in the sound of their cry | |||
Drooling | |||
Spitting up of food or drink after feeding | |||
Uncontrolled passing of stool or urine | |||
Irritability | |||
Very sleepy or difficult to wake up | |||
Appear very frightened | |||
Upset want to be held or comforted | |||
Change in the sound of their cry | |||
Drooling | |||
Spitting up of food or drink after feeding | |||
Uncontrolled passing of stool or urine | |||
Irritability | |||
Very sleepy or difficult to wake up | |||
Appear very frightened | |||
Upset want to be held or comforted |
Please note not all symptoms can be present and some people will react differently, always seek medical attention.
Not All Reactions Are the Same!
Past reactions do not predict future reactions!
People with certain health conditions are more likely to have severe allergic reactions, such as asthma.
There are certain situations that can make a reaction more severe such as:
Larger the dose of allergen or if allergen is within another food. | ||||
The situation that the person was exposed to the allergen | ||||
Exercise can affect either before or after consuming food | ||||
Travel such as flying as allergen is in air conditioning (airborne allergen) | ||||
If the person has consumed alcohol | ||||
The body can also react differently if unwell, experiencing anxiety, experiencing stress, hormones in the body can affect severity. (Menstrual cycle) | ||||
Some medications e.g., beta-blockers, ACE inhibitors, non-steroidal anti-inflammatory medication (NSAIDs) e.g., ibuprofen, may interfere with the action of adrenaline auto-injector and worsen the allergic reaction. |
https://www.nhs.uk/conditions/nsaids/
What is a Biphasic Reaction?
An anaphylactic event can happen in 2 stages, this means after the initial anaphylaxis is treated and symptoms has disappeared, they return without you being exposed to the allergen again. The second reaction can occur between up to 2-72 hours after the first reaction. Therefore, it is important to have a 2nd adrenaline auto-injector as it may be required for the 2nd reaction.
Increased risk factor for having a second reaction.
The patient is a child | ||||
A delay in receiving treatment or a delay in administering adrenaline auto-injector pen of greater than 90 minutes after the symptoms first appear. | ||||
More than one dose of adrenaline auto-injector pen is required. | ||||
Respiratory symptoms require a dose of inhaled salbutamol. (Ventolin) |
Individual Food Allergy And Anaphylaxis Action Plan
Advisable to have with anyone caring for your child, your workplace, places you go often for example clubs/meetings to have an emergency action plan, ask your doctor or consultant for an action plan.

This information is only given as guidance and not extensive. Information to be used at individual’s responsibility. Always seek medical advice.
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