Hives pose a diagnostic challenge to physicians. With an acute episode
, a careful look for possible triggers and relief of symptoms with H-1
antihistamines are usually sufficient. For both urticaria and angioed
ema, the most helpful diagnostic tool may be a carefully taken medical
history, including a family history. When a patient's urticaria lasts
for more than 6 weeks, further physical and laboratory evaluation is
warranted Treatment of chronic urticaria generally involves the use of
antihistamines first. Corticosteroids are to be avoided, if possible.