He explained that the decision to step away from work, "which regrettably includes stepping away from Fall Out Boy for a spell," is "to avoid fading away and never returning."
With this, he assured fans that he fully intended to return, going so far as to say that he would be back "absolutely, one-hundred percent."
"In the meantime, I must recover which means putting myself and my mental health first," he added. "Thank you to everyone including my bandmates and family, for understanding and respecting this difficult, but necessary, decision."
Trohman has been honest about his struggles with mental health, writing about anxiety and depression in his memoir "None of This Rocks," which came out on September 13.
Speaking with People upon the release of his book, Trohman described himself as a "mentally ill person," while acnkowledging how much he's grown since the years he projected his dark emotions onto his bandmates.
"They were probably often subjected to a firestorm of like anxiety and depression. Depression isn't just somebody sad moping on a couch, you get irritable, we get f---ing grumpy, make snide comments," he told the outlet. "I wish I had my s--- together."
You can check out Trohman's full statement below.
Waiting for your permission to load the Instagram Media.