Am finding this thread intersting. DS1 is 7yo and has gone through exceptionally fussy phases. I did EBF until 6months then BLW and at first, he wolfed down anything that we gave him, and lot of it. He gained weight really rapidly and climbed up the centiles that he had slipped during the first few months.
Then, when he was a bit older, around 18months maybe, one by one he started dropping foods until there weren't many options left. He was also allergic to egg and intolerant to dairy, so there were also dietary restrictions.
When he was 5, he started suffering from reflux. Or rather, when he was 5, he was able to verbalise that he was suffering from pain in his chest and stomach and we realised it was reflux. Looking back, I suspect he had suffered it for a lot longer than we knew about.
He was put on medication which didn't really help and I decided to let him lead the way with what he wanted to eat. He had also at this point started taking a few mouthfuls then saying he was full and refusing to eat any more. His diet consisted of soft sloppy stuff like yogurt, custard, soft sandwiches like peanut butter etc and there was no way he could be persuaded to eat anything else.
Then, just before he was 6, I realised he was tongue tied. We had his tie revised and the reflux disappeared. His eating got a little better, but since we had it revised properly in September (the first one wasn't done right) and now the back of his tongue is fully released, he is willing to try lots and lots of different foods.
I have since learned an awful lot about tongue tie and understand that fussy eating can be a big part of it. It is difficult to chew properly and control the food in the mouth when the tongue doesn't have it's full range of movement. DS1 had a little pocket between two strands of his frenulum where he said food used to get caught which he hated. He said certain foods stuck to his teeth, and he was probably not able to sweep his tongue round to get it off. Certain foods made him gag, even when he was older. It tended to be slimy/stringy stuff like squash.
Whilst I don't think for a minute that everyone on this thread has DCs with tongue tie, there are certain things that have been mentioned several times which DS1 had/did or that are common amongst tied kids.
They are:
breastfeeding issues, trouble with weaning - eg choking, gagging, vomiting, sleeping issues, ENT problems, digestive issues and allergy/intolerance, sensory issues, intense dislike of toothbrushing (that's more kids with lip ties, but it's very rare to have a lip tie and no tongue tie), speech problems or speech delay, reflux, high palate and associated dental problems to name a few.
Thing about tongue tie is that unless it's totally obvious, most medics wouldn't know a tongue tie if they saw it and lip ties are dismissed as not important. That's why ds1 went undiagnosed until he was almost 6, and in the end it was me that did all the digging for information.