'We Can't Stop' superstar Miley Cyrus is due to kick off the European leg of her Bangerz tour in Amsterdam this Friday (May 2), but she shared a series of tweets recently that have sparked concern about her health. 

The beauty was recently hospitalised for a number of days following a severe allergic reaction to medication, but was released from the facility after showing significant signs of improvement. Writing on Twitter late at night on April 28, she hinted that she may not be fully recovered as she posted a message that reads: "Spoke to soon."

Cyrus returned to the social networking site yesterday, adding an angry update along with over one hundred 'crying' emojis: "R u f**king kidding me?!?!?!?? #aprilcangof**kitself."

She chatted with Ryan Seacrest earlier this week, in her first post-hospitalisation interview, and confessed that she was seriously ill and the whole experience was very scary: “I was on this medicine for five days, everything was all good and on the sixth day just I woke up … it was so scary … When you’re allergic to something you’re literally poisoning in yourself. I had basically been poisoning myself for a week with something I was really scary allergic to.” 

Cyrus hasn't updated her Twitter page since sharing the aforementioned tweets and at the time of press, her Amsterdam concert is still due to go ahead. 

Watch footage of her Bangerz tour below: