I keep breaking out in hives?

Unclear: Most of the time doctors never find our why patient have hives. Over the counter antihistamines are usually helpful, but must be taken regularly to prevent the hives. Zyrtec (cetirizine) may be the most helpful, but is also the most sleep inducing. If they last 3 months see a doctor -best to see a dermatologist with an interest in the subject.

Chronic Urticaria: Chronic idiopathic or spontaneous urticaria (hives) is the persistence of hives on most days of the week for a period of 6 weeks or longer. It is not due to any medication or food trigger. No specific cause can be identified in most patients with this condition. Treatment involves daily doses of non-sedating antihistamines like Zyrtec (cetirizine). See Allergist for more details and treatment options.