- by Medikoe Health Expert
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- Feb 09 2017
Which Drugs Cause Allergic Reactions?
What is Drug Allergy?
It is an abnormal reaction of the immune system to a medication. A drug allergy is not same as drug side-effect.
It occurs when your immune system mistakenly identifies a drug as a harmful substance, such as virus or bacterium. Once the immune system detects a drug as a harmful substance, it will develop an antibody specific to that drug.
Drugs that commonly cause Allergic Reactions
- Chemotherapy drugs
- Medications for autoimmune diseases
- Symptoms often occur within an hour after taking a drug. Symptoms include,
- Skin rash
- Shortness of breath
- A runny nose
- Itchy, watery eyes
The doctor will conduct a physical examination and he will ask about the onset of symptoms, the time you took medications, and improvement and worsening of symptoms. Some additional tests are done such as:
- Skin tests
- Blood tests
The following interventions may be used to treat an allergic reaction to a drug:
- Withdrawal of the drug
- Medications that can block immune system chemicals activated during an allergic reaction.