Justin Bieber 'in hospital'

<p><br /> Justin Bieber has reportedly been treated in hospital for breathing problems.<br /> </p><p><br /> The teen heartthrob was taken to see a doctor on Wednesday in California after he began struggling to breathe.<br /> </p><p><br /> It happened during filming for his upcoming appearance on hit US TV show, CSI.<br /> </p><p><br /> According to reports out of the States, which his representative is thought to have confirmed, the breathing trouble was brought on by an allergic reaction.<br /> </p><p><br /> He was discharged within an hour, and there was no hint from him on Twitter that he was ill.<br /> </p><p><br /> The 16-year-old was back on set the next day.<br /> </p>