I read this on another site:

"Movement problems/stargazing aren't potential symptoms of the same illness that yawning can be. If the yawns last for longer than a second or two, or happen VERY frequently, or are accompanied by wheezing/squeaking sounds or fluid from the mouth or nostrils, then you have a respiratory infection on your hands."

This came from "Mushroom Spore" on "Arachnoboards" here is the link:
http://www.arachnoboards.com/ab/show...python-yawning

Now Im by no means a Vet or an expert in this field. Just thought I would try to help if I could. Maybe someone else on here may be able to chime in on this.