It's been five years since the death of English singing powerhouse Amy Winehouse, and her mother, Janis Winehouse-Collins, is telling her late daughter's story through her own point of view in a new memoir titled "Loving Amy: A Mother's Story." Winehouse-Collins reveals that her daughter might have suffered from an undiagnosed case of Tourette Syndrome, People reported.

Winehouse-Collins, 60, recalled her daughter's upbringing and said that as a child, Winehouse was nicknamed "Hurricane Amy" for her wild behavior. She wondered if her daughter's mannerisms could have been linked to Tourette Syndrome, a chronic neurological disorder that causes physical and vocal tics and outbursts.

"She could well have been almost Tourette's, where she would just shout things out," Janis told People. "We just do not know."

Winehouse rose to fame with her breakout hit single "Rehab" in 2006, and as her star power increased, so did her addiction to alcohol and drugs, E! News reported, and she also struggled with bulimia. She passed away on July 23, 2011 of accidental alcohol poisoning at just 27 years old.

Asif Kapadia documented the singer's childhood and rise to fame in his 2015 documentary titled "Amy," which gave fans a deeper look into Winehouse's troubled life.

"I honestly think 50 things killed her," Kapadia told E! News last year. "It's no simple thing. It's everything. It's her situation at home. It's her family, her relationships, it's her boyfriend, it's no self-esteem...not feeling enough love to love herself and to care about herself. Everything."

Winehouse-Collins' memoir "Loving Amy: A Mother's Story" is set for a Jan. 12 release.