Supporting evidence is pretty much essential especially if you aim to have your claim decided on the paperwork rather than having to go through a face to face assessment.
Evidence could be from
- your GP
- an MS nurse
- a neurologist
- a physiotherapist
- a bowel and bladder / continence nurse (or doctor/surgeon)
- a rehabilitation specialist
- a social work care plan
- your carer (even your partner or a friend if they spend regular time caring for you)
- your FES clinic
- photographs of adaptations made to your home and aids you use regularly
- anybody else you see in a professional or non professional capacity who can verify your care and mobility needs
If the only evidence you have is old but is very clear about your diagnosis (I’m assuming progressive MS as it’s more likely you’d see a neurologist regularly if you’re RR) then it is still valid. For example, if you have a letter from 10 years ago that says you have progressive MS and perhaps are 6.5 on the EDSS, you are unlikely to have improved from there. But if you’ve got old documentation that is less clear cut, then try to get something new between now and getting your PIP form. Unless you already have the form. Don’t delay sending your form while you get evidence.
Whatever you use, you can send a separate page detailing your evidence, what it is, who it’s from, what it says about your care and mobility needs and how it relates to descriptors. Ie, spell out to the assessor how the evidence is relevant.
Ultimately, if you don’t have / can’t get any documentation, or if what you send isn’t clear enough, you may well have to have a face to face assessment. That’s not the end of the world. It just gives you a bit more stress, that you could do without!