Most troublesome, Amanda – still until this day – is unaware as to what caused her throat to swell up on that night.

The NHS stated that the condition develops suddenly and “gets worse very quickly”.

Symptoms of anaphylaxis include: feeling lightheaded or faint; breathing difficulties; wheezing; and a fast heartbeat.

Other signs of the condition include clammy skin, confusion and anxiety, collapsing or losing consciousness.

There can be other warning signs of an allergy, which includes an itchy, raised rash; feeling nauseous; swelling; and stomach pain.

Should anybody suffer from anaphylaxis, it’s considered a medical emergency.

If the person has an adrenaline auto-injector (and you know how to use it), that’s the first thing that needs to be done.

After that step (or missing it completely), immediately call 999 for an ambulance.

Amanda Barrie suffered from a severe allergic reaction

Amanda Barrie suffered from a severe allergic reaction

If the trigger is identified, such as a nut or an insect stinger in the skin, carefully remove it from the person suffering from anaphylaxis.

The next move is to lie the person flat – unless they’re unconscious, pregnant or having breathing difficulties.

Should another adrenaline auto-injector be available, give another shot if the symptoms don’t improve after five minutes.

If the person requiring medical attention is on their own, it’s possible to perform these steps themselves.

Amanda admitted her ordeal was

There are various triggers that can set off this extreme reaction by the immune system.

Common anaphylaxis triggers include food, such as shellfish, milk, eggs and some fruits.

Other triggers include general anaesthetic, latex, some antibiotics and insect stings.

Amanda – back on top form – will be seen on We Love Are You Being Served on channel 5, at 9pm, Friday August 28.