4 Signs You May Have a Drug Allergy — and What to Do Next

When you take medication, you hope to heal. But on rare occasions, your immune system rebels by seeing the drug as an invader, triggering a drug allergy. 

The most common drug allergy symptoms are a rash, hives, or itching. Sometimes, there’s fever or swelling. However, the most severe reaction is anaphylaxis, which can be life-threatening. 

Our expert team at Allergy and Asthma of Prosper and Celina, Texas, is here to help. If you’re experiencing the symptoms of a potential drug allergy, we evaluate you using specialized methods, such as a skin prick or blood test, to identify your specific allergy triggers. Next, we offer treatment options. 

Not every reaction to medication means you’re allergic. However, the following symptoms can raise concern. 

4 signs of a drug allergy

If you notice any of these symptoms, get the proper medical treatment. 

1. Hives, rash, or itchy skin 

Skin reactions are one of the most common signs of drug allergies. If you’ve taken a medication and later notice a rash, red welts, or general itching, it could be related. Sometimes they appear within an hour, while at other times, these symptoms may not appear for days. 

2. Swelling around your face or throat 

Facial or throat swelling is known as angioedema, and it's a dangerous condition if it restricts your breathing. Seek emergency care if this occurs.  

3. Wheezing or shortness of breath 

If you have trouble breathing or a tightness in your chest, this could be another sign your airways are closing. This is a serious reaction requiring immediate medical care. 

4. Anaphylaxis 

This serious symptom can be life-threatening because it can affect your whole body. Symptoms include a drop in blood pressure, lightheadedness, difficulty breathing, and swelling. It can even stop your heartbeat. Anaphylaxis can happen within seconds. That’s why it’s critical to know if you’re at risk so you can carry epinephrine if needed.

Not every symptom indicates a drug allergy. Yet, if you’ve experienced any of these, it’s worth taking the next step to protect your health. 

What can you do about these symptoms 

If you’ve experienced any of these symptoms, you don’t need to navigate it alone. Here are your next steps.  

Stop taking the medication, and talk to your doctor 

If you take medication and experience any of these symptoms, talk to your doctor. If you experience swelling or breathing difficulties, call 911 or head to the ER. 

See a board-certified allergist 

Only a specialist can confirm if you’re allergic to specific medications and tell which ones are safe. Allergists have several tests to evaluate allergies. 

Track your symptoms 

If it’s not an emergency, take photos of your reactions, such as hives or rashes, and make notes of what you took, when, and how long your symptoms lasted. This information can help your allergist pinpoint the culprit. 

Consider a medical alert bracelet 

If you have a confirmed serious allergy, a medical bracelet alerts emergency responders so they know to avoid the allergen. 

Drug allergies can be serious, yet they can also be misdiagnosed. You deserve a proper evaluation for the safest and most effective treatments. Expert guidance from our allergy experts at Allergy and Asthma of Prosper and Celina, Texas, can protect you from allergy triggers. Schedule your appointment here.