From over-the-counter and prescription drugs to herbal remedies, allergic reactions can occur with any medication. Also known as a drug allergy, these reactions occur when the body responds abnormally to a specific ingredient or type of drug. Pinpointing a drug allergy is essential, as you will need to avoid anything you’re allergic to in the future. While consulting with an allergist is recommended, learn about symptoms that could indicate any underlying issues. 

5 Indications of a Drug-Related Allergic Reaction

1. Skin Irritation

Some signs of drug allergies develop quickly, while others may take more time to appear. Skin irritation, any irregularity on the skin that is itchy or uncomfortable, can take up to a week to present itself. While the root of this can be challenging to diagnose, it often indicates an allergy to many medicines. An experienced allergist will have testing methods to figure out what is causing any skin irritation and if the cause is allergy-related.

2. Fever

Fevers are often indicators that your body is fighting against infection, but they can also indicate that your body is having to fight against a specific drug. Fevers can appear 7 to 10 days after starting a drug and may continue throughout the entire time the drug is used. While many types of drugs can lead to a fever, penicillin, a commonly prescribed antibiotic, is one medication which is known to produce this reaction.

3. Shortness of Breath

In rare cases, particular drugs may cause a life-threatening reaction known as anaphylaxis, the narrowing and constriction of your body’s airways. This reaction often manifests shortly after taking a medication you’re allergic to and may lead to tightening of the airways and throat, a rapid or weak pulse, and nausea and vomiting. If you begin to notice any of these symptoms, seek medical attention immediately.

4 Cold-Like Symptoms

Certain drugs can cause cold-like symptoms, such as itchy or watery eyes and a runny nose. This is particularly common for non-steroidal anti-inflammatory drugs (NSAIDs), such as aspirin. Of course, these symptoms can also point to pollen, pet, or other types of allergies, but an allergist can help pinpoint the potential cause. If you consistently notice these symptoms without being exposed to allergens, consider allergy testing.

5. Swelling

Swelling, specifically in the face, lips, and hands, can indicate an allergic reaction. Also known as edema, swelling is a result of excess fluid becoming trapped in the body. NSAIDs, estrogens, steroids, and certain medications for high blood pressure or diabetes could cause this reaction. If the swelling leads to difficulty breathing or swallowing, please seek medical attention as soon as possible. 

If you’re experiencing these or any other symptoms and you suspect you could have a drug allergy, contact Allergy and Asthma Specialty Center/Masood Ahmad, M.D. As an experienced allergist, Dr. Masood Ahmad has been helping patients with asthma and allergy-related conditions throughout West Chester County, OH for more than 25 years. Explore the center’s full range of services online or call (513) 777-7097 to schedule an appointment.