Hi Sonya,
Sorry to have taken to long to reply.
Re brain scans: I guess our situations are very different. In my case, DS was being seen by two specialists. One skin specialist thought that DS's problem could be tuberous sclerosis because of a depigmentation mark he has. BUT she didn't offer a brain scan, all she said is to come back in six months to see progress.
The other doctor (a developmental pediatrician) told me that yes he is delayed, sent me many blood tests, and said to come back in 5 months to see progress, she didn't offer a brain scan either.
I went to my home country to get another opinion and that is where I saw the neurologist who suggested the brain scan.
So ultimately, the brain scan clarified that DS's problem was not tuberous sclerosis, and what they found is that he has a brain atrophee caused most likely by lack of oxygen at some point.
In short, if I wouldn't have had the brain scan I would have waited for who knows how many months to have blood tests that would not have rendered any answers.
Your case is different because it appears that the doctors have some idea of what the DX might be, but I think they are not sure, right?. Whether or not to have the scan is a very personal decision, but I do agree with cappuccino, the more you know about your child's condition the better.
Re the massage: The physio is who showed me how to give DS his massage (but she is not in the UK). The other people I visited where BIBIC (www.bibic.org.uk), they suggested the massage with the electric massager.
Let me know if I can help with any other info. I know how hard it is at times not knowing what to expect in the future, but what I have learned in these months I have been giving DS his therapy, is that the time and effort you put into their recovery is really well worthed. Children like ours do learn, they do improve, just simply don't give up.
(BTW is the physio teaching your DS to crawl?)
Sorry for such a long post!!!
Take care.