Hi Matt
Welcome to the forum. You can find out where to find information by looking at the FAQ
benefitsandwork.co.uk/guides-for-claimants/faq/general.
There are plenty of people with conditions such as ADHD and Depression who have successfully applied for PIP and there are those with the condition who have been turned down. The DWP is not so much interested in your condition per se - they are interested in how it impacts on your daily life and/or mobility and whether you meet the PIP criteria.
We have a comprehensive guide to making a PIP claim and that will guide you through each question and suggest how you might answer them. The guide can feel daunting - so just try and tackle one question at a time. (It's the first one on the page)
benefitsandwork.co.uk/guides-for-claimants/pip Once you've started filling out you form, if you have any further questions, do come back and ask, and we will try and help.
BIS
