Bishop John Keenan has stepped away from his duties at the Diocese of Paisley.
He has done so on medical grounds, an announcement on social media confirmed.
Bishop Keenan is also the president of the Bishops' Conference of Scotland, which detailed that he will require further tests and examinations over the coming weeks.
A statement read: "Bishop John has been advised to step back temporarily from duties for medical reasons.
"Please keep him in your prayers. We entrust his health to Our Lord and the intercession of Our Blessed Mother, praying for a full and speedy recovery.
"For now, the Vicar General Monsignor Joe Burke will look after the day-to-day administration of the diocese."