In the overwhelming majority of patients with chronic urticaria, a definite etiology is not identified.
Limited laboratory testing may be warranted to exclude underlying causes.
Published guidelines provide clear indications for the use of telemetric monitoring in patients, which are contingent upon frequency, severity, duration, and conditions under which the symptoms occur.
Inappropriate use of telemetric monitoring is likely to increase cost of care and produce false positives potentially resulting in errors in patient management.
In about a quarter of patients with implantable cardioverter-defibrillators, the defibrillator fires within weeks preceding death.