Canadian singer Celine Dion has to postpone the European concerts of her world tour again due to health problems.

She suffers from a "very rare neurological disorder" that affects her singing, among other things, Dion announced in an Instagram video on Thursday.

In the almost five-minute video, Dion says in English and French that she has had "health problems for a long time".

"I was recently diagnosed with a very rare neurological disorder called stiff person syndrome," she explains.

The disease, which mainly causes muscle cramps, affects not only Dion's legs but also her vocal cords: she has problems walking and singing.

Dion had already postponed the European concerts of her "Courage World Tour" in the spring and complained about muscle cramps even then.

She later said she felt "a little better," although she still had cramps at times.

All concerts that were supposed to take place from February to April 2023 will now be postponed to March and April 2024.

Five Germany concerts in Cologne, Berlin, Munich, Hamburg and Mannheim are also affected.

Several concerts that were supposed to take place in May, June and July are even canceled completely.

"It makes me very sad to announce today that I will not be able to continue my tour in Europe in February," said Dion.