Given his hypotonia additionally to the ear issue, should I expect that he will acquire signing more slowly? I have no such experience in my family and do not know which pace is "normal" for a toddler to learn using new signs. Any clues?
I'm curious about the range of 'normal' for a signing vocabulary. One of our grandsons was born with multiple issues (one was severe hypotonia, more on that in a minute). He was so hypotonic he didn't swallow well, so is fed via a g-tube. He's had weekly occupational and physical therapy and other stuff, biweekly speech therapy since leaving the NICU at around 40 days of age.
I did sign with him for various reasons, but I get to see him twice a week, his parents weren't signing, his muscle tone was very poor, and he did not really pick up on it until they correctly identified his problem a year later and began to fix it. In the last 3 months or so he's pointing in a way that very obviously means *THAT!*, signing please, more, eat, water, and he's working hard on Daddy (I am sure that's what he means to say, he's pointing at Daddy, vocalizing in a tone indicating serious annoyance that he's not with Daddy, and then his hand will wave around and touch just about any part of his head or face, OH. MY. Goodness. He's so scrumptiously sweet)
In the last two weeks he started spontaneously putting two signs together to make basic sentences, and twice I've seen him do three. He had his annual evaluation today, and they said that his communication skills are at a level of a baby six months older. I think he's terribly bright, of course, but that surprised me. Since babies of signing parents typically have more advanced signing levels,I am just curious about what the average deaf baby with deaf parents, or even CODAs would be signing at a year. Does anybody know if there's a website somewhere with that info?
About the severe hypotonia- He turned out to have a rare gene mutation of the calcium receptors The result is his body does not recognize his calcium levels accurately, and leaches calcium from his bones, and also causes him to have levels in his blood and in his urine, but doesn't leave enough for the nerves and muscles to work with. Nerves and muscles have to have accurate calcium levels to work (apologies if you knew this, I didn't), and hypothyroidism can be caused by off track calcium levels. There are other reasons a baby might have off kilter calcium levels, and it's possible that the so called 'rare' gene mutation he has is not so much rare as it is undiscovered. Right now we know of two people with it in the world, though there are probably more we just haven't heard of. Oddly, one is a baby born on the west coast either the same age or within a couple months of our grandson, the other, of course, is our grandbaby, born in the midwest.
Sorry this is so long. But do you know your child's calcium levels? My daughter and her husband had to do DNA testing, and my grandson had other tests (Vitamin D levels, too, IIRC), because abnormal calcium can be caused by other things, but it definitely can cause hypthyroidism. And if there is a cause of hypotonia that can be fixed, I think it should be, the sooner the better.