Losing his hair at such a young age took its toll as the teen struggled to make friends, go on dates, or even leave the house.

Alopecia areata incidence was highest in patients in North America, Southeast Asia, and Australia, as well as in women and those aged 30 to 34 years.

Louis Theroux has revealed he is preparing for a "full head shave" due to his battle with alopecia.   The broadcaster, 54, ...