Drug-induced urticaria: Difference between revisions
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{{Infobox medical condition | |||
| name = Drug-induced urticaria | |||
| synonyms = [[Hives]], [[urticaria]] | |||
| field = [[Dermatology]] | |||
| symptoms = [[Itchy]] [[wheals]], [[angioedema]] | |||
| complications = [[Anaphylaxis]] | |||
| onset = Minutes to hours after drug exposure | |||
| duration = Variable, can be acute or chronic | |||
| causes = [[Drug allergy]], [[non-allergic hypersensitivity]] | |||
| risks = Previous drug reactions, [[atopy]] | |||
| diagnosis = [[Clinical diagnosis]], [[skin prick test]], [[serum tryptase]] | |||
| differential = [[Chronic urticaria]], [[physical urticaria]], [[autoimmune urticaria]] | |||
| prevention = Avoidance of triggering drugs | |||
| treatment = [[Antihistamines]], [[corticosteroids]], [[epinephrine]] for severe cases | |||
| prognosis = Generally good with avoidance of the offending drug | |||
| frequency = Common | |||
}} | |||
'''Drug-induced urticaria''' is a type of [[urticaria]] or hives that is caused by a reaction to medication. This condition is characterized by red, itchy welts on the skin that can vary in size and appear anywhere on the body. | '''Drug-induced urticaria''' is a type of [[urticaria]] or hives that is caused by a reaction to medication. This condition is characterized by red, itchy welts on the skin that can vary in size and appear anywhere on the body. | ||
== Causes == | == Causes == | ||
Drug-induced urticaria is caused by an allergic reaction to a drug. The body's immune system reacts to the drug as if it were a harmful substance, releasing chemicals that cause the symptoms of urticaria. The most common drugs that can cause this reaction include [[aspirin]], [[penicillin]], [[sulfa drugs]], [[anticonvulsants]], and [[insulin]]. | Drug-induced urticaria is caused by an allergic reaction to a drug. The body's immune system reacts to the drug as if it were a harmful substance, releasing chemicals that cause the symptoms of urticaria. The most common drugs that can cause this reaction include [[aspirin]], [[penicillin]], [[sulfa drugs]], [[anticonvulsants]], and [[insulin]]. | ||
== Symptoms == | == Symptoms == | ||
The main symptom of drug-induced urticaria is red, itchy welts on the skin. These can appear anywhere on the body and can vary in size. Other symptoms can include difficulty breathing, swelling of the face, lips, tongue, or throat, and a feeling of warmth or flushing. | The main symptom of drug-induced urticaria is red, itchy welts on the skin. These can appear anywhere on the body and can vary in size. Other symptoms can include difficulty breathing, swelling of the face, lips, tongue, or throat, and a feeling of warmth or flushing. | ||
== Diagnosis == | == Diagnosis == | ||
Diagnosis of drug-induced urticaria is based on a physical examination and a detailed medical history. The doctor will ask about any medications the patient is taking and may perform tests to confirm the diagnosis. These can include a [[skin prick test]], a [[blood test]], or a [[drug challenge test]]. | Diagnosis of drug-induced urticaria is based on a physical examination and a detailed medical history. The doctor will ask about any medications the patient is taking and may perform tests to confirm the diagnosis. These can include a [[skin prick test]], a [[blood test]], or a [[drug challenge test]]. | ||
== Treatment == | == Treatment == | ||
Treatment for drug-induced urticaria involves stopping the use of the drug that is causing the reaction. In some cases, the doctor may prescribe antihistamines to help relieve the symptoms. In severe cases, corticosteroids or epinephrine may be used. | Treatment for drug-induced urticaria involves stopping the use of the drug that is causing the reaction. In some cases, the doctor may prescribe antihistamines to help relieve the symptoms. In severe cases, corticosteroids or epinephrine may be used. | ||
== Prevention == | == Prevention == | ||
Prevention of drug-induced urticaria involves avoiding the drug that caused the reaction. If the drug is necessary for the patient's health, the doctor may recommend a desensitization process, in which the patient is gradually exposed to increasing doses of the drug under medical supervision. | Prevention of drug-induced urticaria involves avoiding the drug that caused the reaction. If the drug is necessary for the patient's health, the doctor may recommend a desensitization process, in which the patient is gradually exposed to increasing doses of the drug under medical supervision. | ||
== See also == | == See also == | ||
* [[Allergic reaction]] | * [[Allergic reaction]] | ||
* [[Urticaria]] | * [[Urticaria]] | ||
* [[Drug allergy]] | * [[Drug allergy]] | ||
[[Category:Skin conditions]] | [[Category:Skin conditions]] | ||
[[Category:Allergies]] | [[Category:Allergies]] | ||
[[Category:Drug reactions]] | [[Category:Drug reactions]] | ||
{{stub}} | {{stub}} | ||
{{No image}} | {{No image}} | ||
{{No image}} | {{No image}} | ||
Latest revision as of 00:49, 4 April 2025
| Drug-induced urticaria | |
|---|---|
| Synonyms | Hives, urticaria |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Itchy wheals, angioedema |
| Complications | Anaphylaxis |
| Onset | Minutes to hours after drug exposure |
| Duration | Variable, can be acute or chronic |
| Types | N/A |
| Causes | Drug allergy, non-allergic hypersensitivity |
| Risks | Previous drug reactions, atopy |
| Diagnosis | Clinical diagnosis, skin prick test, serum tryptase |
| Differential diagnosis | Chronic urticaria, physical urticaria, autoimmune urticaria |
| Prevention | Avoidance of triggering drugs |
| Treatment | Antihistamines, corticosteroids, epinephrine for severe cases |
| Medication | N/A |
| Prognosis | Generally good with avoidance of the offending drug |
| Frequency | Common |
| Deaths | N/A |
Drug-induced urticaria is a type of urticaria or hives that is caused by a reaction to medication. This condition is characterized by red, itchy welts on the skin that can vary in size and appear anywhere on the body.
Causes[edit]
Drug-induced urticaria is caused by an allergic reaction to a drug. The body's immune system reacts to the drug as if it were a harmful substance, releasing chemicals that cause the symptoms of urticaria. The most common drugs that can cause this reaction include aspirin, penicillin, sulfa drugs, anticonvulsants, and insulin.
Symptoms[edit]
The main symptom of drug-induced urticaria is red, itchy welts on the skin. These can appear anywhere on the body and can vary in size. Other symptoms can include difficulty breathing, swelling of the face, lips, tongue, or throat, and a feeling of warmth or flushing.
Diagnosis[edit]
Diagnosis of drug-induced urticaria is based on a physical examination and a detailed medical history. The doctor will ask about any medications the patient is taking and may perform tests to confirm the diagnosis. These can include a skin prick test, a blood test, or a drug challenge test.
Treatment[edit]
Treatment for drug-induced urticaria involves stopping the use of the drug that is causing the reaction. In some cases, the doctor may prescribe antihistamines to help relieve the symptoms. In severe cases, corticosteroids or epinephrine may be used.
Prevention[edit]
Prevention of drug-induced urticaria involves avoiding the drug that caused the reaction. If the drug is necessary for the patient's health, the doctor may recommend a desensitization process, in which the patient is gradually exposed to increasing doses of the drug under medical supervision.
