This Cape Town teen is battling a rare condition called Raynaud's disease but she won't let the incurable illness get her down

Dressed in a purple T-shirt, jeans and sneakers, Tyla Koopman of Cape Town looks like your typical 16-year-old, her hands glued to her phone as she sends messages to her friends. 

But as soon as she starts telling her story, you realise her life is very different to that of a regular teen. 

Behind her friendly smile lies an incurable condition that makes pain a daily reality.