The indications for prescribing an adrenaline auto-injector to patients with a history of anaphylaxis include having experienced a suspected anaphylactic reaction, which is characterized by rapidly developing, life-threatening problems involving the airway, breathing, and/or circulation, often with skin and mucosal changes NICE CKS.
After emergency treatment for suspected anaphylaxis, an appropriate adrenaline injector should be offered as an interim measure before a specialist allergy service appointment, with a prescription for 2 further adrenaline injectors, and advice to carry them at all times NICE CG134.
Patients should be provided with information on the signs and symptoms of anaphylaxis, the risk of biphasic reactions, and instructions on when to use the adrenaline auto-injector, including demonstrating correct use NICE CKS.