NEW YORK, May 23 (Xinhua) -- As pollen peaks for the season, the U.S. Food and Drug Administration (FDA) is warning that some popular allergy medications could cause a rare but severe itching side effect.
The FDA said in a safety warning issued in mid-May that some patients who have taken oral allergy medicines daily for long periods of time, at least a few months but often several years, have experienced a severe type of itching, which is known medically as pruritus.
