An anxiety disorder which causes a person to pull out their hair strand by strand, often causing noticeable hair loss as a result. People suffering from trichotillomania may refer to the disorder as 'trich' and may call themselves 'trichsters'.
There are two types of trichotillomania. Type A is most common which involves pulling from the scalp. Type B involves the pulling of eyelashes and eyebrows.
You pull out your hair/eyebrows/eyelashes to the point of baldness? It sounds like trichotillomania to me.