Drug Allergy Program
A drug allergy is an allergic reaction to a medication that your child takes. A child can react to any type of drug – prescription, over-the-counter or herbal.
The Drug Allergy Program at Children’s Health℠ can evaluate how your child reacts to medications. When your child has an allergy but still needs to take medications, we can determine the safest and most effective options. We work with patients of all ages, including babies. We also provide some care through virtual appointments, which enables us to see patients from a wide geographical area.
Conditions We Treat
- Pediatric allergic conjunctivitis (pink eye)
- Pediatric allergic rhinitis (nasal allergies)
- Pediatric allergies
- Pediatric asthma
- Pediatric atopic dermatitis
- Pediatric common variable immunodeficiency (CVID)
- Pediatric food allergies
- Pediatric food protein-induced enterocolitis syndrome (FPIES)
- Hyper IGM (CD40L-deficient)
- Pediatric oral allergy syndrome (OAS)
- Primary immunodeficiency diseases (PIDD)
- Severe combined immunodeficiency (SCID)
- X-linked agammaglobulinemia (XLA)
- Penicillin Allergy and Other Antibiotic Allergy
- Perioperative or Anesthesia Reactions
- Monoclonal Antibodies or Chemotherapy Reactions
- Nonsteroidal Anti-Inflammatory Drug Reactions
- Vaccine Reactions
- Drug-Induced Anaphylaxis
- Severe Skin Reactions to Drugs such as Stevens Johnson Syndrome, Toxic Eepidermal Necrolysis, Drug Reaction With Eosinophilia and Systemic Symptoms
- Other Drug-Related Reactions
Treatments and Services
Drug allergy testing services
In order to get your child a correct diagnosis about drug allergies, we may use different approaches, including:
Allergy tests, such as skin testing (also called prick testing), in which a tiny amount of a drug is administered to the skin to see how your child reacts. A positive reaction can cause a red, itchy bump.
A challenge test, which typically consists of giving one or two doses of the medication in increasing amounts.
Pinpointing the causes of pediatric drug allergies
Our team includes UT Southwestern physicians who are among the nation’s top experts in drug allergies. We see more patients with drug allergies than almost any other program in the region. This gives us the experience and expertise to understand your child’s allergy.
To treat and manage a drug allergy, it is very important to have an accurate diagnosis. We begin our evaluation with a detailed history of any reactions your child has had to medications in the past. We will also give your child a physical exam. For the medical history, it’s helpful if you can give details about:
What medications your child took and what the dose was
How long they took them
What symptoms they had
When the symptoms occurred
How long they lasted
What other prescriptions, over-the-counter medications or herbal supplements your child also takes
What other allergies your child may have – including to drugs, food and insects
Whether there is a history of allergies, including food allergies, in your family
Understanding allergic reactions to medication
At the Drug Allergy Program, one of our first goals is to figure out what kind of reaction your child is having to a medication. We carefully evaluate your child’s past reactions and monitor any new reactions they might be having. This helps us understand the underlying cause to their reactions and develop a plan to manage it.
A drug allergy happens when your child’s immune system recognizes and responds to a drug. There are many ways the immune system can respond to things that are not a part of the body. The way the immune system responds to a drug determines the type of allergy and the symptoms it can cause. This abnormal immune response can affect almost any organ in the body, depending on the type of immune response your child’s body has toward the drug. The term “hypersensitivity” is often used to describe these drug allergy reactions. In addition, your child can have reactions that are not caused by the immune system. These reactions can include intolerance, side effects or toxic effects from the medication. Our Drug Allergy Program can help to distinguish these drug reactions from reactions caused by the immune system.
Managing the most common pediatric drug allergies
Our program sees children with rare allergies, as well as many children with common drug allergies. We have extensive experience with different strategies to manage these allergies. We also collaborate with our colleagues at Children’s Health to recommend alternative drugs that could help your child, without causing an allergic reaction. Some examples of drug allergies that our program manages include:
Penicillin allergies
Other antibiotic allergies
Vaccine allergies
Perioperative reactions, which occur in response to drugs during surgery
Reactions to biologics, such as monoclonal antibodies, which are used to treat many diseases, including some cancers
Reactions to chemotherapy in cancer treatment
Drug desensitization for children
In some children with drug allergies, we are able to use a process called desensitization to help them tolerate the medications they need. This process involves giving very small doses of the medication to your child, and gradually increasing those doses over time. This can teach your child’s body to tolerate a medication, so they can safely receive it.
How do you know if you or your child is allergic to medication?
Reactions to medications can range from mild to severe. If your child develops some of these symptoms either immediately after taking a drug or within days or a few weeks, they may have had an allergic reaction. Symptoms include:
Rapid onset of hives, itching, swelling, wheezing, shortness of breath
Fevers, joint swelling or pains
Rash
Drug-induced anaphylaxis, which is a serious allergic reaction that can affect different systems and be life threatening
A spectrum of rare, serious skin reactions called severe cutaneous adverse reactions, which include:
Drug-related eosinophilia with systemic symptoms (DRESS), which leads to a rash, swelling, swollen lymph nodes and a high count of white blood cells
Acute generalized exanthematous pustulosis (AGEP), which causes swelling, red bumps on the skin and usually a high count of white blood cells
Severe blistering diseases such as Stevens Johnson syndrome (SJS) or toxic epidermal necrolysis (TEN), which can also affect other organs and require ICU-level care. Patients with HIV/AIDS and lupus are typically at risk.
Some reactions appear quickly, and some may not show up for days or weeks after a child is exposed to a drug. Some reactions last a few hours, while severe ones may persist.
Drug allergy testing services
In order to get your child a correct diagnosis about drug allergies, we may use different approaches, including:
Allergy tests, such as skin testing (also called prick testing), in which a tiny amount of a drug is administered to the skin to see how your child reacts. A positive reaction can cause a red, itchy bump.
A challenge test, which typically consists of giving one or two doses of the medication in increasing amounts.
Pinpointing the causes of pediatric drug allergies
Our team includes UT Southwestern physicians who are among the nation’s top experts in drug allergies. We see more patients with drug allergies than almost any other program in the region. This gives us the experience and expertise to understand your child’s allergy.
To treat and manage a drug allergy, it is very important to have an accurate diagnosis. We begin our evaluation with a detailed history of any reactions your child has had to medications in the past. We will also give your child a physical exam. For the medical history, it’s helpful if you can give details about:
What medications your child took and what the dose was
How long they took them
What symptoms they had
When the symptoms occurred
How long they lasted
What other prescriptions, over-the-counter medications or herbal supplements your child also takes
What other allergies your child may have – including to drugs, food and insects
Whether there is a history of allergies, including food allergies, in your family
Understanding allergic reactions to medication
At the Drug Allergy Program, one of our first goals is to figure out what kind of reaction your child is having to a medication. We carefully evaluate your child’s past reactions and monitor any new reactions they might be having. This helps us understand the underlying cause to their reactions and develop a plan to manage it.
A drug allergy happens when your child’s immune system recognizes and responds to a drug. There are many ways the immune system can respond to things that are not a part of the body. The way the immune system responds to a drug determines the type of allergy and the symptoms it can cause. This abnormal immune response can affect almost any organ in the body, depending on the type of immune response your child’s body has toward the drug. The term “hypersensitivity” is often used to describe these drug allergy reactions. In addition, your child can have reactions that are not caused by the immune system. These reactions can include intolerance, side effects or toxic effects from the medication. Our Drug Allergy Program can help to distinguish these drug reactions from reactions caused by the immune system.
Managing the most common pediatric drug allergies
Our program sees children with rare allergies, as well as many children with common drug allergies. We have extensive experience with different strategies to manage these allergies. We also collaborate with our colleagues at Children’s Health to recommend alternative drugs that could help your child, without causing an allergic reaction. Some examples of drug allergies that our program manages include:
Penicillin allergies
Other antibiotic allergies
Vaccine allergies
Perioperative reactions, which occur in response to drugs during surgery
Reactions to biologics, such as monoclonal antibodies, which are used to treat many diseases, including some cancers
Reactions to chemotherapy in cancer treatment
Drug desensitization for children
In some children with drug allergies, we are able to use a process called desensitization to help them tolerate the medications they need. This process involves giving very small doses of the medication to your child, and gradually increasing those doses over time. This can teach your child’s body to tolerate a medication, so they can safely receive it.
How do you know if you or your child is allergic to medication?
Reactions to medications can range from mild to severe. If your child develops some of these symptoms either immediately after taking a drug or within days or a few weeks, they may have had an allergic reaction. Symptoms include:
Rapid onset of hives, itching, swelling, wheezing, shortness of breath
Fevers, joint swelling or pains
Rash
Drug-induced anaphylaxis, which is a serious allergic reaction that can affect different systems and be life threatening
A spectrum of rare, serious skin reactions called severe cutaneous adverse reactions, which include:
Drug-related eosinophilia with systemic symptoms (DRESS), which leads to a rash, swelling, swollen lymph nodes and a high count of white blood cells
Acute generalized exanthematous pustulosis (AGEP), which causes swelling, red bumps on the skin and usually a high count of white blood cells
Severe blistering diseases such as Stevens Johnson syndrome (SJS) or toxic epidermal necrolysis (TEN), which can also affect other organs and require ICU-level care. Patients with HIV/AIDS and lupus are typically at risk.
Some reactions appear quickly, and some may not show up for days or weeks after a child is exposed to a drug. Some reactions last a few hours, while severe ones may persist.
Meet the Care Team
- Timothy Chow, MDPediatric Allergist