What is pathophysiology of Urticaria?

['Tega amatwi iyi paji']

Ni iyihe mikorere y'umubiri w'indwara y'urushwima?

Urticaria, ikunze kwitwa ibishishi, ni indwara y'uruhu igaragazwa no kugaragara kw'ibibyimba bitukura, bibyibushye, ku ruhu.

Imikorere y'indwara ya urticaria ni uko histamine n'ibindi binyabutabire bitera kubyimba biva mu turemangingo twa mast, ari uturemangingo tw'ubudahangarwa bw'umubiri dusanga mu ruhu no mu bindi bice by'umubiri.

Mu gihe umuntu arwaye urticaria ikaze, histamine n'ibindi bintu bitera indwara biterwa n'ikintu runaka kimutera indwara, urugero nk'ibiryo, imiti cyangwa udukoko.

Ibyo bituma utwo turemangingo tugabanya ingano, tukarekura histamine n'ibindi bintu bituma imitsi y'amaraso itembera, bigatuma habaho ibibyimba.

Mu gihe urticaria idakira, akenshi impamvu yayo ntizwi, ariko bivugwa ko ifitanye isano n'imikorere y'ubwirinzi bw'umubiri.

Muri iki gihe, umubiri ukora abasirikare b'umubiri bibasira abasirikare b'umubiri bafite ubushobozi bwo kwakira abasirikare b'umubiri ba IgE (FcεRI) ku ngirabuzima fatizo, bigatuma zikora maze hagasohoka histamine n'izindi ntangabuzima.

Mu gihe cy'urticaria ikaze cyangwa idakira, histamine n'ibindi bintu byongera ubudahangarwa bitera ibimenyetso biranga kuribwa, gutukura no kubyimba.

Ubusanzwe, mu kuvura iyi ndwara hakoreshwa imiti irwanya histamine kugira ngo igabanye ingaruka z'iyo miti kandi igabanye ibimenyetso byayo.

Mu gihe bikomeye, hari imiti yindi nka korutikositeroyide cyangwa omalizumab ishobora gukoreshwa mu kugenzura iyi ndwara.

['Ibitabo']

PubMed/Medline https://www.nlm.nih.gov/databases/download/pubmed_medline.html

RefinedWeb https://arxiv.org/abs/2306.01116

Wahlgren CF: Pathophysiology of itching in urticaria and atopic dermatitis. Allergy. 1992, 47 (2 Pt 1): 65-75.

Raap U, Liekenbröcker T, Wieczorek D, Kapp A, Wedi B: [New therapeutic strategies for the different subtypes of urticaria]. Hautarzt. 2004, 55 (4): 361-6.

[Recommendations for the diagnosis and treatment of urticaria in children]. Arch Argent Pediatr. 2021, 119 (2): S54-S66.

Marrouche N, Grattan C: Childhood urticaria. Curr Opin Allergy Clin Immunol. 2012, 12 (5): 485-90.

Brzoza Z, Grzeszczak W, Rogala B, Trautsolt W, Moczulski D: Possible contribution of chemokine receptor CCR2 and CCR5 polymorphisms in the pathogenesis of chronic spontaneous autoreactive urticaria. Allergol Immunopathol (Madr). , 42 (4): 302-6.

Sweeney TM, Dexter WW: Cholinergic urticaria in a jogger: ruling out exercise-induced anaphylaxis. Phys Sportsmed. 2003, 31 (6): 32-6.

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["Ibirego: uburenganzira bw'umuhanzi"]

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['Itangazo rigomba koherezwa mu nyandiko kuri interineti (reba ahanditse "Kwitaba" kugira ngo ubone aderesi ya interineti). ']

["DMCA isaba ko imenyesha ryawe ry'ikirego cyo kuvutswa uburenganzira rikubiyemo amakuru akurikira: (1) ibisobanuro by'igikorwa kirengera uburenganzira bw'umuhanzi kivugwaho kuvutswa uburenganzira; (2) ibisobanuro by'ibikubiyemo bivugwa ko ari ukurenga ku mategeko n'amakuru ahagije atuma dushobora kubona ibikubiyemo; (3) amakuru yo kuguhamagaraho, harimo aderesi yawe, nomero ya terefone na aderesi imeyiri; (4) inyandiko yawe ivuga ko ufite icyizere ko ibikubiyemo mu buryo bwatanzwe nta burenganzira bifite na nyiri uburenganzira bw'umuhanzi, cyangwa umukozi we, cyangwa mu mategeko ayo ari yo yose; "]

["(5) inyandiko yawe isinyweho, uhanishwa kubeshya, yemeza ko amakuru ari mu itangazo ari ukuri kandi ko ufite ububasha bwo kurengera uburenganzira bw'umuhanzi uvugwaho kubwamburwa; "]

["kandi (6) umukono usanzwe cyangwa wa elegitoroniki w'ufite uburenganzira ku nyandiko cyangwa uw'umuntu wabiherewe uburenganzira bwo gukora mu izina ry'ufite uburenganzira ku nyandiko. "]

['Kudatanga amakuru yose yavuzwe haruguru bishobora gutuma ikibazo cyawe gitinda gukemurwa.']

['Uko twavugana na we']

['Ohereza imeri ikibazo / igitekerezo.']

What is pathophysiology of urticaria?

Urticaria, commonly known as hives, is a skin condition characterized by the appearance of itchy, raised, red welts (wheals) on the skin.

The pathophysiology of urticaria involves the release of histamine and other inflammatory mediators from mast cells, which are immune cells found in the skin and other tissues.

In acute urticaria, the release of histamine and other mediators is triggered by an allergic reaction to a specific allergen, such as food, medication, or insect sting.

This causes the mast cells to degranulate, releasing histamine and other mediators that cause blood vessels to become leaky, leading to the formation of wheals.

In chronic urticaria, the cause is often unknown, but it is thought to be related to an autoimmune mechanism.

In this case, the body produces autoantibodies that target the high-affinity IgE receptor (FcεRI) on mast cells, leading to their activation and the release of histamine and other mediators.

In both acute and chronic urticaria, the release of histamine and other mediators leads to the characteristic symptoms of itching, redness, and swelling.

Treatment typically involves the use of antihistamines to block the effects of histamine and reduce symptoms.

In severe cases, other medications such as corticosteroids or omalizumab may be used to control the condition.

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