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An important concern of the diagnosis of contact allergy to certain substances is the possibility of implanting a foreign body that contains material to which the patient is allergic. For example no one is exempt from needing an orthopedic surgery after a fracture. If for example the patient has a known nickel allergy and during the surgery a screw containing nickel is used, then a rejection of the screw will follow resulting in the absence of bone healing and an unwarranted surgery to remove the screw and replace it with suitable material.
Therefore, patients in whom contact allergy is diagnosed should always inform their physicians about the allergy, especially before the implantation of any foreign body.
There are every year people who die from allergic attacks, some of which we read through the press. There are several types of allergies which may be life-threatening, among them:
Death is usually due to choking or to a drastic drop in blood pressure (this syndrome is known as anaphylaxis and is the most extreme allergic reaction). Importantly, there is a very narrow window for treatment. Prevention is the most important intervention in these cases. It is important to discuss the risks with the allergist, who can, if he sees it fit, give the instructions on how to treat immediately these reactions, in example with an adrenaline auto-injector. In every case, emergency services should be swiftly summoned with the start of the reaction.
Uncontrolled/untreated allergic rhinitis can lead to the development of asthma or can worsen existing asthma.
Allergic diseases that involve the skin, such as atopic dermatitis - allergic eczema, contact dermatitis, chronic allergic rashes (chronic urticaria) may lead to irreversible changes in the involved skin due to a direct deleterious effect or due to an indirect effect (secondary to treatment), for example:
Various allergies (allergic rhinitis, allergic conjunctivitis, itchy rashes, asthma) may impair our ability to have a refreshing sleep. Sleep quality is impaired with snoring or sudden awakenings often resulting in fatigue.
As a consequence of this, the following may develop: