TMJ 'dysfunction' - Health implications

My daughter has always had trouble eating... As a baby she would only feed once in twenty four hours, mostly during the night, apart from that she would suckle for a minute or so and then stop. Although she did put on weight and managed to grow at a fairly normal rate showing that she was getting enough nourishment there were a couple of periods in her childhood when she stayed at the same weight for several years.

She never hid her difficulties in eating, she wanted to eat more so that she could put on weight but the long and the short of it is that if she forced herself she would be sick. Now in her thirties she still strives to put on weight but in spite of a low thyroid function (this should make you fat) she continues to struggle to maintain a normal weight for her height.
There is another problem that makes it difficult for her to eat and that is that after a dozen or so mouthfuls her nose starts to run and becomes blocked.
It will be interesting to find out whether TMJ treatment will make any difference to her ability to eat.