Lizzie Velazquez was born with a medical condition so rare that there are only three known cases in the world.

The “Lizzie Beautiful” author says she's used to standing out, but dealing with bullies, like people on the internet who dubbed her “World's Ugliest Woman”, is hard. Yet, in our beauty-obsessed culture, Velazquez always finds a way to thrive and inspire.

“I'm human … of course these things are going to hurt ... [but] I'm not going to let those things define me," she told HLN’s Dr. Drew Tuesday night.

She added, “The stares are kind of what I'm really dealing with in public right now … I'm starting to want to go up to these people and introduce myself or give them my card and say, ‘Hi, I'm Lizzie -- Maybe you should stop staring and start learning’.”

Watch the full interview in the video player above. Velazquez also has a new book out, "Be Beautiful, Be You."

Dr. Drew airs Monday through Thursday on HLN at 9 p.m. ET.  Be sure to follow the show on Facebook and Twitter @DrDrewHLN.