Drug allergy

Drug allergy
Classification and external resources
ICD-10	T88.7
ICD-9	995.27

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.

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.

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.

Risk factors

A drug allergy is more likely to develop with large doses and extended exposure.

Common drug allergens

When a medication causes an allergic reaction, it is called an allergen. The following is a short list of the most common drug allergens^[1]:

• Antibiotics
  • Penicillin
  • Sulfa drugs
  • Tetracycline
• Analgesics
  • Codeine
  • Non-steroidal anti-inflammatory drugs (NSAIDs)
• Antiseizure
  • Phenytoin
  • Carbamazepine

See also

• Drug intolerance
• Adverse drug reaction
• Food allergy

References

1. ^ "eMedicine". http://www.emedicinehealth.com/drug_allergy/page2_em.htm. Retrieved 2007-06-08. 

This pharmacology-related article is a stub. You can help Wikipedia by expanding it.v · Categories: Allergology Immunology stubs Pharmacology stubs Wikimedia Foundation. 2010. Игры ⚽ Нужно решить контрольную? Jean Saint-Josse Baré Look at other dictionaries: drug allergy — ▪ medicine       hypersensitivity reaction (immune system disorder) to therapeutic agents that occasionally occurs on subsequent exposure to a drug against which an individual has already produced antibodies (antibody). Some drugs rarely cause… …   Universalium drug allergy — an allergic reaction occurring as the result of unusual sensitivity to a drug …   Medical dictionary Allergy — Classification and external resources Hives are a common allergic symptom. ICD 10 T78.4 …   Wikipedia Drug intolerance — or drug sensitivity is a lower threshold to the normal pharmacologic action of a drug. It is not to be confused with drug allergy. Drug intolerance is uncommon and idiopathic, thus extremely difficult to predict except in persons with a prior… …   Wikipedia allergy — 1. Hypersensitivity caused by exposure to a particular antigen (allergen) resulting in a marked increase in reactivity to that antigen upon subsequent exposure, sometimes resulting in harmful immunologic consequences. SYN: acquired sensitivity,… …   Medical dictionary Drug eruption — Classification and external resources Examples of drug eruptions. (A) Bullous dermatitis caused by sulfathiazole (B) Fixed drug eruption caused by phenolphtalein (C) Bullous erythema multiforme (D) Diffuse photosensitivity reaction …   Wikipedia Drug-eluting stent — Intervention An example of a drug eluting stent. This is the TAXUS Express2 Paclitaxel Eluting Coronary Stent System, which releases paclitaxel. ICD 9 CM …   Wikipedia allergy — noun ADJECTIVE ▪ food ▪ milk, nut, peanut, penicillin, pollen, etc. ▪ respiratory ▪ …   Collocations dictionary drug — drug1 /drug/, n., v., drugged, drugging. n. 1. Pharm. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well being. 2. (in federal law) a. any substance… …   Universalium Drug — /droog/, n. Zoroastrianism. the cosmic principle of disorder and falsehood. Cf. Asha. [ < Avestan drauga] * * * I Any chemical agent that affects the function of living things. Some, including antibiotics, stimulants, tranquilizers,… …   Universalium 18+ © Academic, 2000-2025 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”