Abstract
Sixty ragweed-sensitive volunteers participated in a 2-week study that compared symptom profiles during treatment with antihistamine (loratadine, LOR) alone, topical corticoid (beclomethasone, BEC) alone, or the two drugs combined. For 5 days commencing shortly after the beginning of the ragweed bloom, patients took no treatment while we collected baseline data. They were then randomized to one of the three treatments, receiving that treatment for the balance of the 2-week study term. Twice each day they recorded the severity of congestion, eye symptoms, running and blowing, itching, and sneezing. At the end of the study they provided an estimate of overall symptom relief, which favored combined treatment (vs LOR P = 0.001, vs BEC P = 0.042). To gain an estimate of disease severity and treatment effectiveness over time, and to smooth out day-to-day variation, we divided symptom diary reports into three segments (days 2–4, 5–7, and 8–10) for analysis. Combined treatment controlled symptoms better than antihistamine alone in nearly all study segments. Corticoid alone or combined with antihistamine provided similar control of congestion, running and blowing, and eye complaints. Combination therapy controlled itching and sneezing better, especially through the study segments 1 and 2. Patient preference for combined treatment seems to relate to control of itching and sneezing and rapid onset of effect.
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