How is a fluctuating or variable condition taken into account for personal independence payment (PIP)?
For the purposes of personal independence payment (PIP), you should score points for the descriptor that applies to you for the majority of the time, though this will depend to a large extent on the opinion of the medical assessor.
Guidance issued by the DWP says that your ability should be measured over a period of twelve months. So , if you would be unable to complete a descriptor for more than six months out of twelve then you should score points for it.
Where your condition fluctuates so much that you could meet several different descriptors over the course of a year, you will score points for the one that would apply for the greatest proportion of the time.