Allergic reactions happen when your body is sensitive to a specific substance. The reaction can happen when you swallow or inhale the substance or when it is applied to your skin or injected or transfused through an IV into your body.
Allergic reactions can take many forms.
Mild allergic reactions include:
runny or stuffy nose
watery, itchy, red eyes
Moderate or severe allergic reactions include:
swelling of the face, eyes, or tongue
wheezing or difficulty breathing
nausea and/or vomiting
passing out/becoming unconsciousness
Severe allergic reactions are known as anaphylaxis.
Any breast cancer medication can cause an allergic reaction:
Arimidex (chemical name: anastrozole)
Aromasin (chemical name: exemestane)
Femara (chemical name: letrozole)
Evista (chemical name: raloxifene)
Fareston (chemical name: toremifene)
Faslodex (chemical name: fulvestrant)
I've been asked a multitude of questions about drug allergies over the past 20 years. Most people do not get through life without having a side effect from a prescription drug or over the counter (OTC) medication. Adverse drug reactions occur when a medication causes a symptom or abnormal body function that is unintentional and potentially harmful. There are many types of adverse drug reactions but they are often classified as either allergic or non-allergic.
Allergic reactions to drugs are the result of the immune system responding to the medication as if it were a foreign invader (or germ). Symptoms and signs of drug allergy include: itching, rash, swelling, hives, wheezing, dizziness, fainting and fever or anaphylaxis (life threatening allergic reaction). But these are not the only possible signs/symptoms of allergic drug reactions. Some people may experience nausea, vomiting, diarrhea and abdominal pain. Unfortunately many of the above signs/symptoms may also occur in...
Has this happened to you? You get a refill of a medication you've used without issue for years but then suddenly you have a reaction like redness, itching, hives or worse? What happened? Did the formula change? Did the manufacturer change? Did you change? It happened to me last week. I bought a new tube of Retin-A for adult acne. I've been using Retin-A on and off since it first appeared on the market over 20 years ago. I've never had an allergic reaction to any of the formulations. Then last week, after not using the product for 16 months, I went to my dermatologist, got a new prescription, filled it, (at $100 a pop - a $50 co-pay and a $50 deductible), and applied the Retin-A ointment that evening. I used the product on my face, neck and chest for two nights. By Day 3, I noticed some intense itching around my neck, jaw line and chest. I stopped using the product immediately. That evening, the intense itching kept me awake all night...
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