I don't know how old your son is, but I know ear canals get longer as they grow. That is why littles ones are plagued with so many ear infections & such -- because they are so short. Maybe it has something to do with his growth?
Also, strangely with my son, he seems to replace stuff with new things. For example, he used to not go outside if there were garbage trucks in the area. But with a very strong desire to take the bus to school instead of walking (he has low muscle tone) he learned to deal with garbage trucks & the sound of the bus. At first he would cover his ears and tense completely up, now he's completely fine with the bus & other large trucks. Around the same time he stopped shirking from these noises he became scared of the sound of a flushing toilet. The toilet used to be a source of entertainment to him. Now he will not flush the toilet until he's done in the bathroom and he can run out (LOL, but little sis doesn't understand his fears & sees he doesn't flush so she tends to come in and flush for him while he's washing his hands.)
So is he getting better in one area? Could there be a substitute?
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