respiratory muscles

I have recently been diagnosed with Respiratory Dystonia and I am waiting to see a Movement Disorder Specialist.
I have struggled speaking against inappropraite muscle contractions for nearly 6 years now which is exhausting and my respiratory muscles ache badly if I use my voice a lot or do not take regular rest breaks when doing chores.
I have found recently that the gnawing ache of these muscles starts whilst I am eating a meal now and wondered why this could be??

[National Jewish]

With respiratory dystonia the muscles that are involved in breathing and talking are more easily stimulated.  So these muscles tend to spasm.  This can happen with other muscles that are in the area but not involved in breathing or talking, such as the muscles used for eating.  Chewing and swallowing are very complex activities.  These activities take great coordination and a lot of stimulation from the nervous system.  This stimulation may effect muscles that have not been effected by the dystonia.  Unfortunately this would cause those muscles to spasm.  This may be why you are feeling this gnawing ache of these muscles whilst you are eating a meal.  You may be helped by