Agree with all Freya has said. Glad your DS had a good start before the PS started, and glad you seem to be on the ball, as the dates and symptoms mean it could well be PS. I had it (am 64 now) and it also traumatised my parents badly but diagnosis, the operation and the recovery have all made lots of progress. With any surgery there are risks but they're very very low for this op. A common complaint is doctors fobbing off anxious parents instead of getting the tests for PS done. And try to find a surgeon who will try keyhole surgery as the scars will be a lot less than Freya's DH and mine. I've had few after effects - they're fairly rare, most have none at all. Photos show I flourished after the problem was fixed and this seems the usual story. My 4 kids and 6 grandkids have not been troubled by PS, but in some families it keeps coming up. The causes are still not fully understood but are multiple and varied. Best wishes.