here in New York (USA) there is no DIDNOS and I could not find it in my PDR (physicians Desk Referene, and Could not find it in the DSM IV TR (the present manual that the treatment providers in the USA use for diagnosing mental disorders, I also could not find it in the proposed mental disorders for the soon to be DSM 5 which will be coming out in the near future...

you might want to consult your treatment providers so that they can clarify for you what your diagnosis is and why they diagnosed you that way.

that said - your question -

what its called in each person depends upon each persons symptoms and reasons/ causes for the switching.

example

this kind of switching can be called schizophrenia if the switching is due to hallucinations and delusional thoughts, delusional beliefs.

in another person the cause may be due to their being in what is called Mania, in which case its called bipolar disorder.

each person has their own ways in which mental disorders affect them, what symptoms they may be having, underlying causes...

mental health treatment providers take many different things into account when diagnosing mental disorders.

There is more to having DID than having switches into alternate personalities.

can the person (host/core) be switching daily/every once in a while.. it doesnt work that way..

DID is a disorder that you have since before you are 5 yrs old and the switching depends upon many things such as times when you are emotional, triggered, angry, happy, sad... and it happens all through your childhood and into adulthood until you are in treatment where you can learn how to control it. otherwise its uncontrollable and unpredictable. with DID theres no such thing as "ok today Im going to switch into an alter, tomorrow I wont" and it doesnt work like "today Im only going to switch into an alter once, or twice"

its something that happens to you not something you can predict or plan. and it doesnt just happen once in a while. the DID people I know switch many many times with in an hour let alone many times a day depending upon what their triggers are.

to give you an idea of what its like the diagnostic criteria for DID is that you must have at least two alternate personalities that you switch into many times.

in order to get diagnosed one of the tests is sitting in a room with a psychiatrist talking for an hour. during that hour the psychiatrist must witness, talk to at least two alternate personalities and they must fit the diagnostic criteria, which means you have to be switching many times into the same two alters over and over again. while you are doing this the psychiatrist is marking down what he learns about these two alters to see if they are the kind that meets the diagnostic criteria.

to meet the diagnostics theres no such thing as only switching daily or only switching every once in a while. the disorder just doesnt work that predictable, concise way.