You know there’s an issue when Axl Rose thinks he’s more sane than the president.

The Guns N’ Roses frontman went on a brief Twitter rant this week after White House press secretary Sarah Huckabee Sanders dismissed reporters’ questions about Trump’s mental stability, calling them “disgraceful and laughable.’’

The erratic Rose, who’s been known to become unhingedon occasion, said it’s the president who is the problem.

“The WH is the current US gold standard of what can be considered disgraceful,’’ Rose tweeted. “Along with several other condescending adjectives the current WH has no room to call virtually anyone disgraceful.’’

Questions about the president’s mental state have arisen (again) with his recent tweet about North Korea — “I too have a Nuclear Button, but it is a much bigger & more powerful one than his, and my Button works!’’ — and the publication of Michael Wolff’s exposé “Fire and Fury: Inside the Trump White House,’’ which alleges that the president repeats himself constantly.

“It used to be inside of 30 minutes he’d repeat, word-for-word and expression-for-expression, the same three stories — now it was within 10 minutes,’’ Wolff writes. “Indeed, many of his tweets were the product of his repetitions — he just couldn’t stop saying something.’’

Maybe all we need is just a little “Patience.’’