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'''For the WikiPatient page for this topic, click [[Drug allergy (patient information)|here]]'''
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{{Drug allergy}}
'''For patient information, click [[Drug allergy (patient information)|here]]'''


A '''drug allergy''' is an [[allergy]] to a [[drug]], most commonly a [[medication]].  Medical attention should be sought immediately if an allergic reaction is suspected.
{{CMG}}


An allergic reaction will not occur on the first exposure to a substance.  The first exposure allows the body to create antibodies and memory lymphocyte cells for the [[antigen]].  However, drugs often contain many different substances, including [[dyes]], which could cause allergic reactions.  This can cause an allergic reaction on the first administration of a drug.  For example, a person who developed an allergy to a red dye will be allergic to any new drug which contains that red dye.
==[[Drug allergy overview|Overview]]==


A drug allergy is different from an intolerance.  A [[drug intolerance]], which is often a milder, non-immune-mediated reaction, does not depend on prior exposure.  Most people who believe they are allergic to [[aspirin]] are actually suffering from a drug intolerance.
==[[Drug allergy classification|Classification]]==


==Risk factors==
==[[Drug allergy pathophysiology|Pathophysiology]]==
A drug allergy is more likely to develop with large doses and extended exposure.


==Common drug allergens==
==[[Drug allergy causes|Causes]]==
When a medication causes an allergic reaction, it is called an [[allergen]].  The following is a short list of the most common drug allergens<ref>{{cite web| url=http://www.emedicinehealth.com/drug_allergy/page2_em.htm |title= eMedicine | accessdate= 2007-06-08}}</ref>:
*Antibiotics
**[[Penicillin]]
**[[Sulfonamide (medicine)|Sulfa drugs]]
**[[Tetracycline]]
*Analgesics
**[[Codeine]]
**[[Non-steroidal anti-inflammatory drug]]s (NSAIDs)
*Antiseizure
**[[Phenytoin|Dilantin]]
**[[Carbamazepine|Tegretol]]


==See also==
==[[Drug allergy differential diagnosis|Differentiating Drug Allergy from Other Diseases]]==
*[[Drug intolerance]]
*[[Adverse drug reaction]]


==References==
==[[Drug allergy epidemiology and demographics|Epidemiology and Demographics]]==
{{reflist}}


{{immunology-stub}}
==[[Drug allergy risk factors|Risk Factors]]==
{{pharma-stub}}
 
==[[Drug allergy screening|Screening]]==
 
==[[Drug allergy natural history, complications and prognosis|Natural history, Complications and Prognosis]]==
 
==Diagnosis==
[[Drug allergy history and symptoms|History and Symptoms]] | [[Drug allergy physical examination|Physical Examination]] | [[Drug allergy laboratory findings|Laboratory Findings]]
==Treatment==
[[Drug allergy medical therapy|Medical Therapy]] | [[Drug allergy primary prevention|Primary Prevention]] | [[Drug allergy secondary prevention|Secondary Prevention]] | [[Drug allergy cost-effectiveness of therapy|Cost-Effectiveness of Therapy]] | [[Drug allergy future or investigational therapies|Future or Investigational Therapies]]
== Case Studies ==
[[Drug allergy case study one|Case #1]]
==Related Chapters==
*[[Stevens-Johnson syndrome]]
*[[Toxic epidermal necrolysis]]
*[[Erythema multiforme]]


{{Template:Allergic conditions}}


[[Category:Allergology]]
[[Category:Allergology]]
[[Category:Immunology]]
[[Category:Immunology]]
[[Category:Emergency medicine]]

Latest revision as of 09:36, 13 July 2013

Drug Allergy

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Classification

Pathophysiology

Causes

Differentiating Drug Allergy from Other Diseases

Epidemiology and Demographics

Risk Factors

Screening

Natural history, Complications and Prognosis

Diagnosis

History and Symptoms | Physical Examination | Laboratory Findings

Treatment

Medical Therapy | Primary Prevention | Secondary Prevention | Cost-Effectiveness of Therapy | Future or Investigational Therapies

Case Studies

Case #1

Related Chapters