Life isn't always rainbows and butterflies for celebrities despite the fact that the glitz and glamour of Hollywood make it seem that way. Some celebs are actually battling health issues and diseases that are quite serious.

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Battling lifelong illnesses is not something anyone wants to have to deal with but the celebs on this list have inspired millions of people by being strong and fighting back against their illnesses.

10 Selena Gomez - Lupus

In 2015, Selena Gomez informed the world that she was battling Lupus, a disease that causes one's immune system to basically betray its own tissues. It is considered an inflammatory disease and it is a lot scarier than most people realize. In 2017, Selena Gomez's kidneys were so damaged from Lupus that she had to have a kidney transplant. One of her best friends, Francia Raisa, donated her kidney to Selena.

9 Kate Middleton - Eczema

Kate Middleton, the royal Duchess of Cambridge and wife of Prince William battles issues with eczema. Eczema is considered a skin condition that can impact an individual's life forever. Someone with eczema deals with dry, itchy, flaky, irritated skin without doing anything to cause a problem. Other celebs who deal with eczema include Brad Pitt, Catherine Zeta-Jones, Adele, and Kerry Washington.

8 Gigi Hadid - Hashimoto's Disease

A few years back in 2016, Gigi Hadid revealed to the world that she had been recently diagnosed with an autoimmune disorder. Fans were surprised to learn that the disease attacks the thyroid and is known as Hashimoto's Disease (or Hashimoto's Thyroiditis). The unfortunate disease is known to affect an estimated 14 million people around the globe right now.

7 Lady Gaga - Fibromyalgia

Lady Gaga tweeted this message to her fans: "In our documentary the #chronicillness #chronicpain I deal w/ is #Fibromyalgia. I wish to help raise awareness & connect people who have it." Fibromyalgia is a disease that causes widespread muscle pain throughout one's body. It also causes extreme fatigue as well as issues with memory. Insomnia is another huge factor in this disease.

6 Sarah Hyland - Kidney Dysplasia

Everyone's favorite actress from Modern Family, Sarah Hyland, revealed that she deals with kidney dysplasia. This is the type of disease that causes kidneys to develop in an abnormal manner while an infant is still in the womb.

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Sarah Hyland had a kidney transplant in 2012 and then another one in 2017 after her body, unfortunately, rejected the first transplant.

5 Winnie Harlow - Vitiligo

Winnie Harlow is completely winning at life as a model and influencer. She never allowed Vitiligo to get in the way of dreams, goals, or aspirations. Vitiligo causes the loss of skin color in blotches across one's body. Winnie Harlow posted this message to Instagram: "I'm not a 'Vitiligo Sufferer. I'm not a 'Vitiligo model.' I am Winnie. I am a model. And [I] happen to have Vitiligo. Stop putting these titles on me or anyone else. I AM NOT SUFFERING! If anything I'm SUCCEEDING at showing people that their differences don’t make them WHO they are!" She gets full support from us! Her career has been thriving since her days on America's Next Top Model.

4 Kim Kardashian - Psoriasis

Kim Kardashian first discovered that she was dealing with Psoriasis on an episode of Keeping Up With the Kardashians. She went to the doctor very concerned about what was going on with her skin. During an episode of Keeping Up With the Kardashians, it was revealed that Kris Jenner also deals with Psoriasis. Kim Kardashian penned a 1000-word essay about her struggle with the skin condition.

3 Avril Lavigne - Lyme Disease

According to the CDC, "Most cases of Lyme disease can be cured with a 2- to 4-week course of oral antibiotics, patients can sometimes have symptoms of pain, fatigue, or difficulty thinking that last for more than 6 months after they finish treatment."

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That being said, Lyme disease is often considered a disease that has long-term, lasting effects. Justin Bieber, Amy Schumer, Bella Hadid, and several other celebs also have been vocal about their Lyme disease diagnoses.

2 Selma Blair - Multiple Sclerosis

Multiple Sclerosis, also known as MS, is a condition that impacts one's brain and central nervous system. Selma Blair spoke about her MS diagnosis in 2018 and has since been very honest and open about what she goes through. she described the original feelings of MS as feeling like a pinched nerve before she was officially diagnosed. She did also express that she had been experiencing the symptoms for some time before confirming what the symptoms were coming from.

1 Nick Jonas - Type 1 Diabetes

It is estimated that 1.25 million Americans live with type 1 diabetes. One of those individuals is Nick Jonas. At the 2017 Radio Disney Music Awards, Nick Jonas said, "This is truly incredible. These kids who are up here are all type 1 diabetes, like myself... This is a disease I was diagnosed with when I was 13. It was a moment in my life when I was just getting ready to start making music with my brothers, and touring, and it was something I thought would slow me down before I even got started." He has inspired so many people in the world who are dealing with the same thing. NEXT: Michael J. Fox Foundation Funds Innovative New Zealand Research On Parkinson's Disease