Arashis acommon allergic reactionto medications.Drug allergiesoccur when the immune system overreacts to a medication, leading to symptoms such as:
Skin rash (most common)
Hives (urticaria)
Swelling (angioedema)
Anaphylaxis (severe reaction)
A. Dizziness❌→Side effect, not an allergic reaction.
Some medications (e.g., antihypertensives) cause dizziness, but it isnot an immune system response.
B. Constipation❌→Side effect, not an allergic reaction.
Opioids (e.g., morphine, oxycodone) commonly cause constipation, but it isnot due to an allergy.
C. Nausea❌→Side effect, not an allergic reaction.
Many medications (e.g., antibiotics, chemotherapy) cause nausea, but this isnot an immune-mediated reaction.
American Academy of Allergy, Asthma & Immunology (AAAAI)– Defines allergic reactions to medications.
FDA Drug Allergy Guidelines– Lists common symptoms of drug allergies.
PTCB PTCE Exam Content Outline– Covers adverse drug reactions and medication safety.
Why Not the Other Options?Key References:
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