Sia, the Aussie artist who is most well known for hiding her face behind massive wigs, has revealed more than just her face in an update on Friday.

The ‘Chandelier’ singer took to Twitter on Friday to reveal a neurological disease diagnosis, sharing her story in an effort to normalise chronic pain and talk about the struggle many sufferers face on a daily basis.

In the tweet, which has amassed more than 75,000 likes, Sia revealed her Ehlers Danlos diagnosis. Ehlers Danhlos is a genetic disorder that weakens the connective tissue in your body.

There are 13 subgroups of the disease, which affects one in 5000 people worldwide. Ehlers Danlos currently has no cure, but can be treated and managed with proper care.

The disease causes fatigue and chronic pain for suffers, among a long list of other symptoms.

Despite starting her career by revealing next-to-nothing about herself, the 43-year-old has become increasingly personal in recent years.

Back in 2013, the Adelaide-born artist revealed her Oxycodone, Vicodin and alcohol addictions. Just last year the artist shared that she was eight years sober.

Along with writing her own pop sensations, Sia has also written songs for Adele, Rihanna, Beyonce and Katy Perry.

Sia has been releasing music since 1997, but started receiving mainstream praise in 2011 after featuring on David Guetta’s ‘Titanium’ and Flo Rida’s ‘Wild Ones’. Since then, she’s had a truly impressive career with a string of hit tracks including ‘Chandelier’, ‘Elastic Heart’ and ‘Cheap Thrills’, just to name a few.

Since coming out with her diagnosis on Sunday morning (Australian time), Sia has been met with a tonne of support from fans. Thousands of fans and fellow sufferers have flocked to the tweet to thank the ARIA-winning artist for sharing her story and helping to normalise the condition.

Image: Getty Images / Presley Ann Slack