Erin Moriarty has revealed shes been diagnosed with Graves disease.

The Boys star took to Instagram to share the health update on Thursday. There, she revealed that since receiving the diagnosis, shes been increasing in strength ever since.

A month ago, I was diagnosed with Graves disease. Within 24 hours of beginning treatment, I felt the light coming back on. Its been increasing in strength ever since, she wrote. If yours is dimming, even slightly, go get checked. Dont suck it up and transcend suffering; you deserve to be comfy. Shits hard enough as is. In the series of photos Moriarty shared in the announcement post, she shared a screenshot of a conversation with her mother where she wrote, Im serious; I really need relief. I feel nauseated tonight. I feel so shit and removed from who I am, I cant live like this forever.

Later in the caption, Moriarty reflected on her experience pre-diagnosis, writing, One thing I can say: if I hadnt chalked it all up to stress and fatigue, I wouldve caught this sooner.

Autoimmune disease manifests differently in everybody/every body. Your experience will be different from mine, she added. My experience will be different from yours. Perhaps greatly, perhaps minutely.

Mayo Clinic defines Graves disease as an immune system condition that affects the thyroid gland that also causes the body to make too much thyroid hormone. The Clinic, too, notes that while anyone can get the disease, its more common in women and people over than 30.

Erin Moriarty has starred in Eric Kripkes superhero drama The Boys since its first season as Annie January/Starlight. The shows fourth season finished up almost a year ago, and while theres no official word on when season five will arrive, it will be the series final installment.