I get tied up in knots about this so if I offend please forgive me
I like "additional needs"; as a practitioner I consider additional needs this could be:
A substantial physical difficulty
A learning difficulty
A sensory difficulty
A food allergy
but it could also be:
Parents going through a divorce (or indeed a marriage)
Moving house
A broken leg
A bereavement
Potty training
Teething
Starting school/Nursery
as they are all times when I alter my practise (practice?) in order to make life a little easier (more accessible?) for the child
For me it's about treating the child as an individual and knowing the family; I feel (perhaps wrongly) that in school (for example) the groups of children are larger and the closeness that I can develop in my setting wouldn't be possibly (eg 1 teacher 30 children) plus I have a wide age range so I can easily alter my provision for that child with the equipment & skills I already have.
When DD was 'disabled' (visually impaired with a psychological issue) I was shocked at the wide range of accommodation that could/couldn't be made in school & the attitudes of the teachers to her problem.
She now has asthma which she doesn't consider a disability, but I do - because when she gets a 'cold' it can mean 3-10 days off school depending on the severity and how it hits. The asthma isn't her disability it's how her body reacts to minor viruses due to the asthma (if that makes sense?)
Again no intent to impose my views - just to explain how I feel