URTICARIAURTICARIANettle rashHebberden abad 18nettle rash Laws Milton angioedemaOsler angioneuroti oedema Classi!iation Classi!iation Aute urtiaria"h#sial urtiariaChroni urtiaria and angioedemaUrtiaria $asulitis ACUT% URTICARIAACUT% URTICARIA& ' (Ig% mediated h#)ersensiti$it#%tiolog# *+ C#tomegalo$irus Co,sa-ieAHe)atitis . /iruses+ 0 12 3 u))er res)irator# in!etion+ In!an#+dair# )roduts+ Adults+ 0 423 !ood items * )eanuts5 shell!ish!ruits5 sesame seed Clinial !eaturesClinial !eatures+ (heals and swellings & 61 h+ 7#stemi s#m)toms 8 head ahe5 gastrointestimal u)set whee9ing"ruritus0 :iagnosis :iagnosis & 61 hHistor# o! !ood or drug inta-e In!etion )ro$o-ed"ri- teston!irmOral hallenge test ; rd gen ?or angioedeme oro)harm, *+ Cedrenaline 7C 2@4 mg A 2@4 + %)hedrine 63 nebuli9er+ 7hort ta)) on$erse o! ortiosteroid B "h#sial urtiarias *"h#sial urtiarias *+ as urtiaria reation to )h#sial stimuli+ as urtiaria reation to )h#sial stimuliT#)e o! urtiaria Nature o!stimuluss@ :ermogra)hism