United Kingdom, July 2 -- Debbie Harry took drugs to avoid an "emotional rollercoaster" during her younger years.

The 80-year-old Blondie singer has told how her ex and former bandmate Chris Stein was suffering from an unknown condition when the pair self-medicated to "stabilise" themselves.

She explained to Vanity Fair magazine: "Chris was overcoming something and we didn't know what it was.

"We needed to do some drugs to stabilise ourselves from some kind of emotional rollercoaster.

"Had we gone to a shrink, we probably would have been severely medicated."

Chris went on to be diagnosed with pemphigus vulgaris - a rare autoimmune disease of the skin - in 1983.

However, Debbie admitted drugs were "everywhere" in her social circles i...