Everyone who has a set of tear ducts has bawled it out listening to Adele. She's one of those rare stars that has found a way to resonate with everyone. The proof is in her sold-out shows and her ability to soar across music charts around the world.

But as big of a star as she may be, the singer leads a notoriously private life. In fact, the 34-year-old only recently revealed that she's been struggling with a chronic condition for over two decades.

In an interview with the Daily Star , Adele revealed she's suffered from sciatica since she was 15, after rupturing a disk in her back. Sciatica is a severe nerve pain that shoots from your lower back through to your hips, buttocks and legs.

“I’ve been in pain with my back for, like, half of my life, really. It flares up, normally due to stress or from a stupid bit of posture,” the singer shared.

At her Las Vegas show on New Year’s Eve, theDaily Starreported that the singer could be heard telling the crowd she was having trouble with the pain.

“I’ve just got to get over to the other side of the stage,” she could be heard saying in a video. “I have to waddle these days as I have really bad sciatica.”

Watch a moment from An Audience With Adele. Post continues below.

The singer shared that her commitment to exercise has helped the pain subside.

"I got my tummy strong, down at the bottom, which I never had before, [and] my back don’t play up as much,” she said. “It means I can do more, I can run around with my kid a little bit more."

In another Las Vegas show in December (she has a five-month residency calledWeekends with Adele), the singer also opened up about her struggles with mental health after her separation.

"I started having therapy again because I went a few years without. I needed to start," she said. "Before, obviously, when I was going through my divorce, I was basically doing five therapy sessions a day.

"But now I am doing it because I just want to make sure I’m topping myself up every week to make sure I can give you everything."

Want to take a deep dive into everything you probably didn't know about Adele?

Let's look back at the singer's rise to fame, the men that have influenced her albums and her relationship with sporting agent Rich Paul.

Adele's relationship with her father.

When Adele Laurie Blue Adkins was three years old, her father left.

Her mother had fallen pregnant at the age of 19 after meeting her dad the year before in a North London pub.

Adele’s father moved to Wales, took up drinking, and didn’t participate in her childhood at all. In fact, Adele said in 2017: “I didn’t know what a dad was supposed to do because I never had one.”

Adele revealed she and her father reconciled over the past three years. Before his death in May this year, she played him her new album.

"We forgave each other. ... We found our peace together, and then I played the album to him on Zoom," she said.

Recalling their listening session she told Winfrey: "His favourites were all of my favourites, which I thought was amazing."

She described spending time with her father before his death as "very, very healing," adding that "when he died, it literally was like the wound closed up".

Adele's rise to fame.

Adele loved music from the moment she could talk, and by age four, she was singing all theSpice Girlssongs.

Her mother, Penny Adkins, worked three jobs so she could afford to send her daughter to music classes.

By the time she was 14, Adele had been accepted into the BRIT School for Performing Arts and Technology.

When she was 18, a record label came across some of her demos on MySpace and signed her.

Her first album19came out shortly afterwards and an appearance onSaturday Night Livesinging ‘Chasing Pavements’ and ‘Cold Shoulder’ in 2008 catapulted her into global stardom. TheSNLepisode not only became the highest-rating episode in 14 years, the day after her debut album soared on the US charts. She went on to win a Grammy Award for Best New Artist that year and sold more than seven million copies of19worldwide.

Watch: Adele’s first performance of ‘Chasing Pavements’ on Saturday Night Live in 2008. Post continues after video.

The men behind Adele's albums.

At the time of creating her album19, Adele was dating a man who had been nicknamed “Mr 19”. Her album spoke of how she fell in love with him and then broke up with him after witnessing him “making a pass” at one of her male friends, reported The Sun.

His identity was never revealed, but he apparently demanded royalties for the songs that were about him.

Adele's second album,21,was inspired by photographer Alex Sturrock who she dated for a year in 2008, reports Heat Magazine. The album sold 17 million copies worldwide and stayed on the top of the charts longer than any album had in 20 years.

According to The Mirror, Adele discovered Alex was engaged and a few months after their split, which is when she wrote the smash hit 'Someone Like You'.

In 2011, Adele suffered a devastating blow at the height of her career. She damaged her vocal cords while singing live on a French radio show. She had to cancel her tour and undergo surgery.

However, she came back stronger than ever and won all six of her nominations at the 2012 Grammy Awards.

"Since this is a vocal award, I want to thank my doctors, they brought my voice back," she told the audience that night.

In 2011, Adele met charity entrepreneur Simon Konecki and in October 2012 they had a son, Angelo, when the singer was 24.

The couple kept their relationship very private, even suing a UK-based photo agency for publishing paparazzi images of their son when he was one years old.

Adele suffered from postnatal depression after the birth of her son, telling Vanity Fair it made her feel like she'd made the "worst decision of her life."

"My knowledge of postpartum – or postnatal, as well call it in England – is that you don’t want to be with your child; you’re worried you might hurt your child, you’re worried you weren’t doing a good job. But I was obsessed with my child. I felt very inadequate, I felt like I’d made the worst decision of my life… it can come in many different forms," she told the publication.

In 2015, Adele released her third album25at the age of 27, telling her fans: “25is about getting to know who I’ve become without realising, and I’m sorry it took so long but, you know, life happened."

pic.twitter.com/dDImEhKt10

— Adele (@Adele) October 21, 2015

Her single 'Hello' debuted at number one in countries all over the world, and once again brought Adele global success.

Adele and Simon wed in a secret ceremony in 2016, with their marriage only officially confirmed with brief mentions of her "husband" during her 2017 Grammy acceptance speech. In the same year, she told an Australian crowd: "I'm married now."

In 2016, Adele opened up to 60 Minutes Australia about her family, saying: “It’s only because of [Simon] and because of our kid and stuff that I’m all right.”

"There was quite a long time when I didn't believe in myself. I'd lost my confidence and I couldn't find myself for a while because I was just a mum," she added.

In 2017, after more vocal cord damage forced her to cancel shows, Adele announced she was taking a break. She became a full-time mum, and also spent time lobbying for the victims of the Grenfell Tower blaze - lending her voice to a charity aiding survivors of the disaster.

After eight years together, Adele and Simon announced their divorce in April 2019.

"They are committed to raising their son together lovingly. As always, they ask for privacy. There will be no further comment," a statement read.

Reflecting with Oprah on her relationship with Konecki, she credited her ex-husband with preventing her from going down a dangerous path of self-destruction.

"I could have easily have gone down some dodgy paths ... and sort of self-destructed from sort of being so overwhelmed by all of it, and he came in, and he was stable, the most stable person I have ever had in my life up until that point."

The couple still live opposite each other in Los Angeles and continue to co-parent nine-year-old Angelo.

The star went on to reveal that despite going their separate ways, she still trusts Konecki with her life. "I feel like him and Angelo were angels sent to me, that's how I feel," she added.

Adele's relationship with her body.

Adele previously shared a photo to Instagram on her 32nd birthday, which she celebrated amidst the coronavirus pandemic.

But the response to Adele's birthday's post was more focused on her weight loss, rather t