Drug allergies are a group of symptoms caused by an allergic reaction to a drug. A drug allergy is the abnormal reaction of your immune system to a medication. Any medication over-the-counter, prescription or herbal is capable of inducing a drug allergy. However, a drug allergy is more likely with certain medications. A drug allergy occurs when your immune system mistakenly identifies a drug as a harmful substance, as if it were a viral or bacterial infection. The most common signs and symptoms of drug allergy are hives, rash or fever. A drug allergy may cause serious reactions, including anaphylaxis, a life-threatening condition that affects multiple body systems. A drug allergy is not the same as drug side effects, the known possible reactions that are listed on a drug label. A drug allergy is also distinct from drug toxicity caused by an overdose of medication.
Signs and symptoms of a drug allergy often occur within an hour after taking a drug.
Less commonly, reactions can occur hours, days or weeks later. Drug allergy symptoms may include:
• Skin rash
• Shortness of breath
• Runny nose
Drug allergy also leads to some other conditions like serum sickness, drug-induced anemia, Drug rash with eosinophilia and systemic symptoms etc. An examination for drug allergy may show: Decreased blood pressure , hives, rash, swelling on lips etc. A drug allergy occurs when your immune system mistakenly identifies a drug as a harmful substance, as if it were a viral or bacterial infection. The treatment is provided to relieve pain and symptoms.
Generally anti-histamines are used formild symptoms like rash, bronchodialators for respiration problems,corticosteroids for skin and epinephrine injection to treat anaphylaxis. The offending medication and similar drugs should be avoided.
Generally in Ireland Up to 28 % of the population suffer some type of allergy 15% need to see a specialist because of the complexity of the conditions.Children are particularly affected. 1 in 50 children have a life-threatening nut allergy, apart from other food allergies.Allergy has become more complex and severe. At least 10% of children and young adults have more than one allergic disorder.