Canadian pop singer Justin Bieber has revealed he has been diagnosed with Lyme disease.
"It's been a rough couple years," the 25-year-old wrote on Instagram, adding that he was also suffering from a chronic viral infection.
The star said he was aware of social media speculation that he had a drug problem, after he was pictured looking unwell with blotches on his skin.
Lyme disease is a bacterial infection caused by ticks, reports the BBC.
The symptoms often include a rash, muscle pain, and tiredness.
What did Bieber say?
On his Instagram page, the artist wrote that people had suggested he looked like he was "on meth", but "they failed to realise I've been recently diagnosed with Lyme disease, not only that but had a serious case of chronic mono which affected my skin, brain function, energy, and overall health".
He said he was getting "the right treatment" to help address the disease, and that more would be revealed in an upcoming YouTube documentary series about his life.
"You can learn all that I've been battling and OVERCOMING!!" he wrote, telling his 124 million Instagram followers: "I will be back and better than ever".
What is Lyme disease?
- Lyme disease is caused by bacteria carried by some species of ticks - around 13 per cent in the UK are believed to be infected
- It cannot be passed on from person to person
- Symptoms - including the bulls-eye rash, fatigue and fever - usually develop around three weeks after a bite
- The majority of those who take the full three-week course of antibiotics make a full recovery but a few people have symptoms that last for years. It's not clear why this happens, so there is no agreed treatment, but anyone who thinks they have been affected in this way is advised to speak to their doctor
- The New Forest and the Scottish Highlands are known Lyme disease hotspots - but people should take care wherever there is long grass
- The NHS test, which is highly accurate, looks at antibodies the body produces, which can take some weeks to reach detectable levels