Billboard Hot 100 Fest

Beliebers Prove 'Bieber Fever' Is a Real Epidemic During Fan Army Face-Off

Beware: This video may convince you to convert to Belieberism.

There is such a thing as having a severe case of Bieber Fever. Symptoms come in the form of intense sobs, handmade fan T-shirts, Twitter fandom accounts (not to mention hashtags), and high-pitched screams. The symptoms are just the beginning since once you have it, there’s no going back, because conditions typically last a lifetime.

Dating back as early as 2010, the devoted Justin Bieber fandom known as Beliebers come from all walks of life, stretching from teen aficionados to spunky grandparents who claim to be the “oldest Beliebers.” There’s nothing off-limits for Beliebers, who have literally done everything to prove their unconditional love for the global pop star. From kissing a Justin Bieber poster to chopping off hair that had the privilege of touching the singer’s body, fans near and far continue to stand by their man.

While Beliebers have publicly shown their undefeated commitment to the 23-year-old artist, it might be too late to say sorry since he lost in the first round of voting to One Direction's Louis Tomlinson, whose fans came through with the victory during Billboard's Fan Army Face-Off.

Nonetheless, take a look at just how loyal Beliebers have been through the years above.