American singer Sufjan Stevens revealed he is learning to walk again after being diagnosed with Guillain-Barré syndrome, a rare neurological disorder in which the immune system attacks nerve cells, writes CNN.

The musician wrote that during his hospitalization he spent two weeks in the medical-surgical unit, where he underwent a five-day treatment program and received infusions of immunoglobulin to prevent the disease from "spreading to the lungs, heart and brain".

"Last month I woke up one morning and I couldn't walk. My arms and legs were numb and I had no strength, feeling, mobility," Stevens wrote on her blog, adding that he learned the diagnosis after a series of tests at the hospital.

Severe cases of Guillain-Barré syndrome can cause muscle weakness that leads to paralysis, potentially interfering with breathing and blood pressure or heart rate.

In Stevens' case, recovery is in sight as he begins "intense physical therapy, building strength, to get his body back in shape and learn to walk again."

"My doctors did everything to keep me alive and stabilize my condition. I owe them my life," he added.

Stevens is a famous indie singer who was nominated for an Academy Award in 2018 for the original song "Mystery of Love" from the movie "Call Me By Your Name". He was preparing his tenth studio album, Javelin, which will be released on October 6, before he ended up in hospital.