Lili Reinhart is opening up about her health, revealing that she’s spent the last year dealing with an unknown illness. In a social media post to accompany the release of a new interview with Self Magazine, the Riverdale actress, 28, reminded readers to prioritize their health, while sharing what’s going on with hers.

The "Riverdale" alum has been diagnosed with interstitial cystitis following a series of inconclusive testing.

Lili Reinhart is giving an "honest glimpse" into her search for answers related to her health in a detailed recap of what she called the "hardest year of my life." On Thursday, the Riverdale alum–who previously has been very candid about her mental health–shared several photos of herself in various medical offices as well as screenshots of texts she sent to loved ones at the time she initially set out looking for explanations.

Riverdale star Lili Reinhart is giving fans a look at what has been the "hardest year of [her] life" in a heartbreaking health update. Reinhart revealed that she has been diagnosed with Interstitial Cystitis,