urticaria
"Just writing this in case it helps another person to know what their "trigger"  was.  I was given a cup of Artichoke Tea for the first time.  Several hours later (during the night)  started scratching shoulders and upper body.   Itching stopped for few hours during the next day and re-occurred later that evening and spread to many other areas of body as I took myself to emergency dept of hospital.  Was given one Prednisolone and two Zyrtec tabs in the very early hours of morning.   Now, six hours later and (after great sleep)  have awoken to no visible hives and no itching at all.    Will get script for Zyrtec later on today just in case it comes back.  But, fingers crossed it will
not do so."