India, June 18 -- Singer Sonu Nigam, 52, has revealed that he is battling a painful nerve condition that has kept him under medical supervision over the past week, requiring multiple MRI and CT scans, medications and physiotherapy sessions. In a video shared on Instagram on Tuesday, the singer, while showing a patch on his shoulder and neck, said, "My nerves are pinched. I have been taking MRI and CT scans for a week. I have been taking a lot of medicines." The singer added, "Physiotherapy was very painful. I am taking painkillers now. Due to that, my throat is also a little heavy." Sonu explained that the muscle-relaxant medication prescribed as part of his treatment has also "affected his throat", a concern for a singer preparing for live performances. Despite the discomfort, Sonu said he is committed to going ahead with his upcoming concerts. "May God give me strength," he said, admitting that he is feeling nervous ahead of the performances. The singer is scheduled to perform on June 27 in Mumbai, followed by concerts in Delhi on July 25 and Abu Dhabi on August 21. HTC...