Selena Gomez has revealed how she underwent a kidney transplant over the summer.

The 25-year-old pop star and actress has been suffering from lupus - a chronic autoimmune disease - since 2015.

In an open Instagram update, Selena shared a picture of herself on a hospital bed following the operation.

"Lupus continues to be very misunderstood but progress is being made,” she wrote.

Selena Gomez shared her story with her millions of followers on Instagram
Selena Gomez shared her story with her millions of followers on Instagram

I mean, you’ve got to give it to her - a kidney transplant at the age of 25 is huge. But a kidney transplant after suffering from a condition like lupus, and all under the watchful eye of the public and the media. Well, she’s a braver woman than me.

Plus - how amazing does she look? I mean, if that was me and I’d just undergone a huge, life-changing operation - well, I’d probably end up looking like a wrinkly, old kidney, not a fresh-faced 25-year-old.

All that aside, I think it’s great to see high profile celebrities like Selena Gomez - someone who has become a role model to thousands of young girls (and boys) around the world - use her huge social media influence to talk openly about her battle with a condition like lupus.

And to use it to encourage her 126million followers to donate to the Lupus Research Alliance. Well, that’s just even better.

I guess this all means a bit more to me than anyone else, because I’ve recently been diagnosed with the condition myself.

Tyler in hospital after the diagnosis
Tyler in hospital after the diagnosis

It was July 2017 when my whole life changed. It was the month I was diagnosed with lupus nephritis.

The condition basically relates to inflammation of the kidneys - or in my case, kidney failure - caused by systemic lupus erythematous (SLE).

Well, at least, I think that’s what it means anyway.

You see, lupus is still a relatively obscure condition. And by that I mean - there isn’t much out there about it.

No-one really knows exactly what causes it, why people get it or, unfortunately, how to cure it.

And there's no handy guidebook handed out with a diagnosis, either.

Tyler Mears before her diagnosis
Tyler before her diagnosis

But, in layman's terms, here’s what I know about the condition so far;

  • It’s an autoimmune disease
  • It causes the immune system to produce too many antibodies which can sometimes attack healthy tissue and result in inflammation, pain and damage
  • Young women and people of African-Caribbean, Chinese and Asian descent are more likely to develop the condition - but, in fact, anyone can get it
  • It’s something I’ll have for life
  • And it absolutely, undoubtedly and inadvertently sucks

I'm not going to lie, it was all a bit of a blow to deal with at the start.

Going from a fit and active person who trained in the gym five to six days a week, lifted heavy weights, climbed mountains and spent every waking minute exploring and adventuring - to a person who couldn't even get out of bed in the middle of the night was a big shock to the system.

The medication that Tyler has to take after being diagnosed with Lupus

It was hard, but in a way - I couldn't have been happier to find out I had lupus.

OK, maybe happy isn’t the right word - but definitely relieved to have a diagnosis.

After months of chronic pain, countless trips to the doctor, days spent lying on the settee and repeatedly telling people I just “didn’t feel right” - I finally had answers.

I wasn’t just "tired" or moaning about some aches and pains anymore. I knew what was going on inside my body and as bad as the diagnosis was, I was one step closer to getting back to the girl I used to be.

Tyler was fit and active before her diagnosis
Tyler was fit and active before her diagnosis

And it came just in the nick of time because to be completely honest, I was starting to think I was losing it a bit.

Surely I can’t be this tired all the time. Am I just being lazy? Maybe I’m stressed? Anxious? Is it all in my head? Should I maybe talk to someone?

All of these things were running through my mind and probably the minds of everyone else I found myself moaning to all the time.

Oh and there was some moaning, let me tell you. Work colleagues; friends; family - they all had it. No-one was safe. God - I was sick of the sound of my own whining by the end.

But it turns out, it wasn’t all in my head after all. It was in fact in my kidneys and my joints and my eyes and my skin. My bloody immune system was going off on one.

I was in fact waking up in excruciating pain and floods of tears in the middle of the night, not because I was stressed, but because the muscles and joints in my knees, elbows and back were so inflamed I couldn’t move. My feet and hands were so swollen that I couldn’t walk to the toilet or open the handle on my bedroom door, not because I was anxious, but because I had lupus.

Tyler's swollen hands were caused by Lupus

Finally being able to put a name to it - well, that was the best medicine of all.

Ironically, for a while after my diagnosis, I couldn’t bring myself to read about the condition.

The Internet - Google especially - brought up a shed load of horror stories. Worst-case scenarios like organ failure, infertility, cancer, death - they were all passed off as being “normal” parts of the condition. News websites and magazines kept using words like 'deadly' and 'life threatening' to describe it.

That’s scary enough to deal with anyway - let alone when you’re battling a chronic condition like lupus (and I say that as an avid former self-diagnosing Googler).

I remember, when I was unwell or in pain as a child, my Mam would always comfort me and say things like: "It won't last forever".

And it didn’t.

Whether it was the flu, a cut on my knee or the chicken pox - she was always right. A dose of Calpol; a bandage and some Germoline; and I'd be as right as rain soon enough.

But now I’m facing something that does last forever. That doesn’t go away after some Calpol, and takes more than a bit of cream to make it better.

But reading about people like Selena Gomez and Lady Gaga - who also opened up about her battle with fibromyalgia this week, another chronic pain illness - who are so open about their conditions - well that gives me hope.

Lady Gaga was hospitalised this week as she battle fibromyalgia

This is something I’ve tried to do from the very start. After being diagnosed, I told myself I wasn’t going to shy away from the condition.

I am a writer by trade, so I would do what comes naturally to me - and write.

And hopefully by doing this - although not on any scale comparable to people like Selena Gomez or Lady Gaga - I can help to raise awareness of the condition, or even help someone else who may be going through something similar.

When I was feeling at my lowest ebb in July, when I was hooked up to machines and being pumped full drugs and medicines, someone close to me said: “Whenever you get dealt a s*** hand in life you've got to remember one thing: Cheerfulness in the face of adversity.”

And they were right.

So rather than focusing on the bad right now - I'm focusing on the good.

Tyler is determined to focus on the positive
Tyler is determined to focus on the positive and recently got back on the treadmill

Yes I have lupus, but I'm alive. I'm not in as much pain anymore and I'm getting the treatment I need. I'm surrounded by amazing family, friends, an amazing boyfriend and incredible consultants too.

If there's one thing I've come to realise recently it's that there's always someone worse off than you in this life.

You can see that just by walking around our local hospitals. There are people who have lost limbs, lost loved ones, lost any quality of life they once had. But they smile and they say hello and they get on with it.

And that's exactly what I plan to do.

At the moment I'm taking it all one day at a time.

I'm also stocking up on the fake tan, The lupus can stop me from going out in the sun, but that hasn’t stopped me from asking all the patients on my ward to chuck on a surgical glove and tan my back.

I've come to realise that laughter and being happy is the best medicine whether that's through friends, family or a bottle of fake tan.

I’ve already overcome the worst, and I can guarantee that, real soon - just like I’m sure Selena will be - I'll be back to my normal self, climbing mountains, exploring and adventuring. All while rocking an amazing fake tan!

Tyler was diagnosed with Lupus
Tyler was diagnosed with Lupus

What is lupus?

Despite being lifelong, lupus is a condition that "flares" up and down. So while one day you might feel right as rain, the next you could be holed up in bed feeling like you're on death's door.

I like to call them "good days" and "bad days", but these flares can last anything from a couple of hours to weeks and maybe even months in some cases.

There are a number of things that can trigger a flare up - stress being one of the main factors.

For me, one of the biggest triggers is the sun so I constantly have to cover up and wear a high factor sun block. Sun bathing is also completely out of the question.

How lupus affects my body

Lupus can attack and inflame any part of your body. It mostly goes after your muscles and joints but in more severe cases like mine, it can attack organs like the kidneys, lungs, the heart or brain.

I have Stage 4 Lupus and the condition has affected several parts of my body in a number of ways, including:

  • Kidneys - the lupus resulted in severe swelling on my kidneys, causing them to go into organ failure. My kidney function is now getting back to normal, but there is still inflammation and a risk of scarring in the future which could ultimately mean transplant/dialysis
  • Eyes - the optic nerves at the back of my eyes were so inflamed, doctors feared I could lose my vision. This also caused the shapes of my disks to change shape in a way many doctors had never seen before. I also suffer from severe photosensitivity meaning my eyes can't process bright lights and I have to wear dark glasses, as well as experiencing severe migraines and vision loss
  • Muscle and joint pain
  • High blood pressure
  • Heart - Doctors have recently found a murmur in my heart and I'm being sent for further tests and scans
  • Skin - Lupus sufferers develop a number of different skin conditions, including a "butterfly" rash across the middle of their face. This can be unsightly and embarrassing for sufferers.
  • Fatigue

What does the future hold?

Following my diagnosis in July, I was put on a number of medications, including a very high dose of steroids.

I still take around 15 tablets a day including steroids, blood pressure drugs and calcium. I'm also undergoing immunosuppressive treatment to turn off my immune system.

Doctors initially suggested a course of chemotherapy but this was decided against due to the fact that one day I want to have children.

It is hoped that once the treatment is finished and my immune system is switched off, that it can slowly be turned back on and will (hopefully) function normally. This essentially mean that I will be in remission. It will then be a case of avoiding another flare up and all the triggers that cause them.

My whole lifestyle has changed completely since being diagnosed with Lupus.

The treatment doesn't come without its side effects - hair loss, bone damage, cancer risks, fertility issues, stomach cramps and of course picking up every cold, flu and infection going but if anything, lupus has made me more aware of my body and how I was neglecting it before.

I'm healthier, drinking less, I've quit smoking and started things like swimming and yoga.