I must ask is changes in mood a symptom of sporadic fatal insomnia or fatal familila insomnia?

You are worried: These are very rare conditions, and mood symptoms can be part of them; but other conditions are much more likely. You seem extremely worried about having this diagnosis, and our answers and suggestions don't seem to be meeting your needs. For your best care, please see your own physicians in your own community. They can work closely with you in person. Good luck to you.

Mood is irrelevant: For diagnosis of this disorder. If you are pre-occupied with this diagnosis, the more relevant question is why? What psychological benefit does a possible diagnosis of fatal insomnia give to you? Some patients secretly wish that they have a rare disorder so that they can attract attention and become special or famous. Even when provided evidence to the contrary, they have a hard time accepting.