According to this article, you’re 3 times more likely to get awarded PIP for psychiatric disorders (including conditions like anxiety, psychotic disorders, PTSD and learning disabilities) than you would for Neurological diseases including MS…
My cleaner gets pip for her ADHD. When she told me that she’d been awarded it she was actually laughing, because even she thought she was taking the piss trying. And then I’ve got a friend who’s been forced to retire after being diagnosed with long Covid, and he keeps getting rejected for pip.