Urticaria history and symptoms: Difference between revisions
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*''Chronic urticaria'' refers to hives that persists for 6 weeks or more. There are no visual differences between acute and chronic urticaria. Some of the more severe chronic cases have lasted more than 20 years. A survey indicated that chronic urticaria lasted a year or more in more than 50% of sufferers and 20 years or more in 20% of them. Of course this does mean that in almost half the people it clears up within a year and in 80% it clears up within 20 years or less.<ref name="pmid5801331">{{cite journal|author=Champion RH, Roberts SO, Carpenter RG, Roger JH |title=Urticaria and angio-oedema. A review of 554 patients |journal=Br. J. Dermatol. |volume=81 |issue=8 |pages=588–97 |year=1969 |pmid=5801331 |doi=}}</ref> | *''Chronic urticaria'' refers to hives that persists for 6 weeks or more. There are no visual differences between acute and chronic urticaria. Some of the more severe chronic cases have lasted more than 20 years. A survey indicated that chronic urticaria lasted a year or more in more than 50% of sufferers and 20 years or more in 20% of them. Of course this does mean that in almost half the people it clears up within a year and in 80% it clears up within 20 years or less.<ref name="pmid5801331">{{cite journal|author=Champion RH, Roberts SO, Carpenter RG, Roger JH |title=Urticaria and angio-oedema. A review of 554 patients |journal=Br. J. Dermatol. |volume=81 |issue=8 |pages=588–97 |year=1969 |pmid=5801331 |doi=}}</ref> | ||
*''Drug-induced urticaria'' has been known to result in severe cardiorespiratory failure. The anti-diabetic [[Sulfonylurea|sulphonylurea]] [[glimepiride]] (trade name Amaryl®), in particular, has been documented to induce allergic reactions manifesting as urticaria. Other cases include [[dextroamphetamine]]<ref name=dxl57>{{cite web |title=Prescribing Information Dexedrine |date=June 2006 |url=http://dailymed.nlm.nih.gov/dailymed/fdaDrugXsl.cfm?id=1215&type=display|publisher=GlaxoSmithKline}}</ref>, [[aspirin]], [[penicillin]], [[clotrimazole]], [[sulfonamide]]s and [[anticonvulsant]]s. | *''Drug-induced urticaria'' has been known to result in severe cardiorespiratory failure. The anti-diabetic [[Sulfonylurea|sulphonylurea]] [[glimepiride]] (trade name Amaryl®), in particular, has been documented to induce allergic reactions manifesting as urticaria. Other cases include [[dextroamphetamine]]<ref name=dxl57>{{cite web |title=Prescribing Information Dexedrine |date=June 2006 |url=http://dailymed.nlm.nih.gov/dailymed/fdaDrugXsl.cfm?id=1215&type=display|publisher=GlaxoSmithKline}}</ref>, [[aspirin]], [[penicillin]], [[clotrimazole]], [[sulfonamide]]s and [[anticonvulsant]]s. | ||
*''Physical urticaria'' | *''Physical urticaria'' symptoms develop after exposure to the physical agent. | ||
==References== | ==References== | ||
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
History and Symptoms
- Acute urticaria usually show up a few minutes after contact with the allergen and can last a few hours to several weeks. Food allergic reactions typically fit in this category. Common causes of reaction include consumption of shellfish, nuts, eggs, fish, acid derivatives, dye, or a combination of these.
- Chronic urticaria refers to hives that persists for 6 weeks or more. There are no visual differences between acute and chronic urticaria. Some of the more severe chronic cases have lasted more than 20 years. A survey indicated that chronic urticaria lasted a year or more in more than 50% of sufferers and 20 years or more in 20% of them. Of course this does mean that in almost half the people it clears up within a year and in 80% it clears up within 20 years or less.[1]
- Drug-induced urticaria has been known to result in severe cardiorespiratory failure. The anti-diabetic sulphonylurea glimepiride (trade name Amaryl®), in particular, has been documented to induce allergic reactions manifesting as urticaria. Other cases include dextroamphetamine[2], aspirin, penicillin, clotrimazole, sulfonamides and anticonvulsants.
- Physical urticaria symptoms develop after exposure to the physical agent.
References
- ↑ Champion RH, Roberts SO, Carpenter RG, Roger JH (1969). "Urticaria and angio-oedema. A review of 554 patients". Br. J. Dermatol. 81 (8): 588–97. PMID 5801331.
- ↑ "Prescribing Information Dexedrine". GlaxoSmithKline. June 2006.