Brian Setzer of the Stray Cats says he has been dealing with a health issue that has affected his ability to perform on stage.

Brian Setzer announced on social media on Friday, Feb. 14, that after he realized he could not play guitar, he was diagnosed with an autoimmune disease.

"I know I will beat this, it will just take some time," the musician wrote in a social media post on Thursday.

Brian Setzer of the Stray Cats has developed an autoimmune disease that prevents him from playing guitar, according to a recent Instagram post from the Massapequa-raised frontman. Setzer, 65, did not cite a name for the disease, but noted that it has affected his ability to perform other tasks with his fingers.

Brian Setzer of the Stray Cats recently issued a sad update. He states that he was having trouble playing his guitar. It turns out that he has an auto-immune disease that prevents motion in his fingers.

Fellow guitarist Steve Vai also left a top-liked comment on Setzer’s post, writing, “Brother Brian, you are a soldier! Take your time, you're on the mend, and we are all eager for your full recovery to optimum health. much love to you.”